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7/6/2025 8:34:57 PM EDT
[#1]
Yes I do!
7/6/2025 10:01:51 PM EDT
[#2]
Quote History
Originally Posted By ClickClickBoom1:
Yes I do!
View Quote


Sweet!

I'm looking at a Griffin Recce 5 for my 5.56 SBR.
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
7/13/2025 10:02:03 AM EDT
[Last Edit: Jkees][Edited] [#3]
Finally got to a range where I can magdump the XCR-M to see how the recoil controls. Gotta say man it is smooth.

Youtube shorts dont imbed but i took a POV video

https://youtube.com/shorts/8OlJWOkGHRw?si=IKUqjpt4fm_L09U-
7/13/2025 11:37:57 PM EDT
[#4]
Hell yeah.

Recoil control is a trivial matter. I can easily spot hits with mine. l'd have to weigh mine, but I believe there's quite a bit less reciprocating mass than an comparable AR.
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
7/17/2025 6:08:52 PM EDT
[Last Edit: Gr8Santini][Edited] [#5]
12” 8.6 blackout.  I’m in the process of reassembling it and lost the roll pin that holds the charging handle in place.  Ordered a replacement from RA.
Attached File
Attached File
Son of a bitch must pay!
7/17/2025 6:35:38 PM EDT
[#6]
That came out damned sharp. You know what ammo you're going to use?
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
9/2/2025 11:24:55 PM EDT
[#7]
I just picked up my 7.5 inch .300 blk XCR-L pistol and noticed the serial number is about 5000 higher than the XCR-L I purchased in 2011.  I know the early ones had a different letter prefix to the serial number as I have a very early production XCR from the first year they were available. I'm guessing there are between 16,000 to 20,000 XCR-L's.

Does any know how many are out there?
9/3/2025 12:28:23 PM EDT
[#8]
Quote History
Originally Posted By ClickClickBoom1:
I just picked up my 7.5 inch .300 blk XCR-L pistol and noticed the serial number is about 5000 higher than the XCR-L I purchased in 2011.  I know the early ones had a different letter prefix to the serial number as I have a very early production XCR from the first year they were available. I'm guessing there are between 16,000 to 20,000 XCR-L's.

Does any know how many are out there?
View Quote


@ClickClickBoom1

Just judging by the serials on my - Ls (early and recent) and -M, I think between 20k and 30k of both types is reasonable. I asked RA and will let ya know what I hear.

RA should be sending out the Tailhook brace for my 12.5" 5.56 today or tomorrow. Haven't shot it yet, but it's so smooth.

Carried my 18.6" -M on a battle rattle hike in the mountains. The fact that the XCR is slimmer than even the trimmest large-frame AR made a difference in carry comfort. Also, I like how my trigger finger naturally settles in on the bolt catch (pushing it downward) when that finger is off the trigger. Little things like that make a considerable difference when one is lugging a rifle all day.
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
9/8/2025 9:11:31 PM EDT
[#9]
Did you find out how many XCR's have been made?
9/8/2025 9:59:58 PM EDT
[#10]
@ClickClickBoom1

I have not. If I hear anything, I'll post.

Gearhead Works finally came through and RA sent out the FAST 2 Tailhook Brace. Had it hear in three days. Looks great and the 12.5" shoulders nicely with a Magpul K2. Gonna run some rounds through it this weekend.
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
9/8/2025 10:41:27 PM EDT
[#11]
My 7.5 .300 blk pistol was held up there weeks waiting for the adapter!
9/9/2025 11:56:21 AM EDT
[#12]
Quote History
Originally Posted By ClickClickBoom1:
My 7.5 .300 blk pistol was held up there weeks waiting for the adapter!
View Quote


About the same wait for me. I like that RA offered to send it out before they got the brace. Gave me time to put all my shit on it.

I asked if they'd swap the straight trigger for a curved one. All of my other rifles have curved trigger and that's just the way I prefer it. The straight trigger is really nice for those who like that type.

Still debating which can to put on. I was looking at the Griffin Recce 5, which has a great reputation, but now I'm leaning toward a TBAC Ultra 7. I already have an Ultra 9, and the 7 is 6.5 ounces lighter than the Griffin. Minimum barrel length isn't an issue and I'm not doing mag dumps. Having can commonality would be nice as my other XCRs and ARs all have CB mounts.
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
9/15/2025 2:00:58 PM EDT
[#13]
I'll get some pictures of the whole ensemble later, but I ran two hundred rounds through the 12.5" -L with a Thunder Beast Ultra 9 on it. A bit gassy, but I could turn the gas down to "1". Setup  was quiet enough to not register with the shot timer.

No malfunctions, and accuracy was a hair over MOA with a ten round group of PMC 55 gr. FMBJBT. I did not test with my 77 gr. TMK handloads, but I will soon.

Instead of getting the Griffin can, I'm sticking with TBAC since it works great and I already have CB mounts.
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
9/22/2025 9:06:42 AM EDT
[#14]
What sort of price would you all say is fair for my P&W 14.5" 6.5CM (w/o the scope and can)?

“Always love your country — but never trust your government!" - Robert Novak
9/22/2025 12:06:00 PM EDT
[#15]
Quote History
Originally Posted By Paulie771:
What sort of price would you all say is fair for my P&W 14.5" 6.5CM (w/o the scope and can)?

https://i.imgur.com/5RatWLR.jpeg
View Quote


How many rounds through it? Pin and weld will probably hurt, especially if someone has a different can mount.

Good-lookin' stick.
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
9/22/2025 12:13:53 PM EDT
[#16]
Quote History
Originally Posted By lew:

How many rounds through it? Pin and weld will probably hurt, especially if someone has a different can mount.

Good-lookin' stick.
View Quote
Couple hundred at most.  I'm 2nd owner. Looked essentially unfired when I picked it up. I haven't shot it that much and need the money for some home repairs.
“Always love your country — but never trust your government!" - Robert Novak
9/22/2025 7:04:30 PM EDT
[#17]
Quote History
Originally Posted By Paulie771:


Couple hundred at most.  I'm 2nd owner. Looked essentially unfired when I picked it up. I haven't shot it that much and need the money for some home repairs.
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By Paulie771:
Originally Posted By lew:
How many rounds through it? Pin and weld will probably hurt, especially if someone has a different can mount.

Good-lookin' stick.


Couple hundred at most.  I'm 2nd owner. Looked essentially unfired when I picked it up. I haven't shot it that much and need the money for some home repairs.


That sucks.

I'd start it at $2200 and see where it goes. New ones are $2600 and change.
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
9/23/2025 5:40:19 PM EDT
[#18]
I would say around 1900-2200 depending on how long you want to wait.

Being such a niche market with XCR's its hard to get your money back out of them if you buy new.
9/23/2025 8:29:13 PM EDT
[#19]
Last I checked XCR Forum was really slow, but it might help to check over there.

If I had the cash, I'd help ya out.
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
9/26/2025 11:17:59 AM EDT
[Last Edit: Paulie771][Edited] [#20]
Quote History
Originally Posted By lew:
Last I checked XCR Forum was really slow, but it might help to check over there.

If I had the cash, I'd help ya out.
View Quote
All good.  I appreciate it.  It ended up not being as bad as I expected so I think I'm going to keep it for now. I really do like it.
“Always love your country — but never trust your government!" - Robert Novak
9/26/2025 6:01:43 PM EDT
[#21]
Quote History
Originally Posted By Paulie771:


All good.  I appreciate it.  It ended up not being as bad as I expected so I think I'm going to keep it for now. I really do like it.
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By Paulie771:
Originally Posted By lew:
Last I checked XCR Forum was really slow, but it might help to check over there.

If I had the cash, I'd help ya out.


All good.  I appreciate it.  It ended up not being as bad as I expected so I think I'm going to keep it for now. I really do like it.


Well that's the best outcome.

What ammo you running through it?
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
9/27/2025 4:32:58 PM EDT
[#22]
Quote History
Originally Posted By lew:


Well that's the best outcome.

What ammo you running through it?
View Quote


Mainly Hornady 140 gr ELD-M and FGMM 140s. I haven't had the time to really stretch it out and figure out which one it likes better.
“Always love your country — but never trust your government!" - Robert Novak
9/27/2025 9:42:45 PM EDT
[#23]
Quote History
Originally Posted By Paulie771:


Mainly Hornady 140 gr ELD-M and FGMM 140s. I haven't had the time to really stretch it out and figure out which one it likes better.
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By Paulie771:
Originally Posted By lew:
Well that's the best outcome.

What ammo you running through it?


Mainly Hornady 140 gr ELD-M and FGMM 140s. I haven't had the time to really stretch it out and figure out which one it likes better.


Awesome. I use either Hornady 140 ELDM or American Gunner. Both shoot equally well.
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
10/1/2025 10:01:23 AM EDT
[#24]
Anyone know how .300 subs do out of these?
Never make another person a priority when they merely see you as an option...

"Some People Are Like Slinkies. They're Not Really Good For Anything, But They Bring a Smile To Your Face When Pushed Down The Stairs."
10/1/2025 12:41:33 PM EDT
[#25]
Quote History
Originally Posted By TheOtherDave:
Anyone know how .300 subs do out of these?
View Quote


No experience, but I'd have to assume there is plenty of gas adjustment on the Type 3 gas block.

My 5.56 and 6.5CM will huck brass 50+ feet away with the gas all the way open. With a can, both run on "2".
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
10/1/2025 12:47:49 PM EDT
[#26]
Quote History
Originally Posted By TheOtherDave:
Anyone know how .300 subs do out of these?
View Quote


I have one with a 7.5" barrel. No issues being able to adjust the gas but I don't remember the setting off the top of my head.

I do remember it being quieter than my jakyl. Also slightly slower which is good because the jakyl I had issues with some subs near the limit.
10/1/2025 1:40:48 PM EDT
[#27]
Thanks-I was more meaning how accuracy is. I have an early 3 digit XCR I don’t use a lot but might consider SBRing in .300BLK. I’d shoot subs 90% of the time..
Never make another person a priority when they merely see you as an option...

"Some People Are Like Slinkies. They're Not Really Good For Anything, But They Bring a Smile To Your Face When Pushed Down The Stairs."
10/17/2025 6:29:55 PM EDT
[#28]
a good week for robinson. his rifle is taking off and the scar is dead
10/17/2025 6:32:20 PM EDT
[Last Edit: Jkees][Edited] [#29]
Quote History
Originally Posted By ews:
a good week for robinson. his rifle is taking off and the scar is dead
View Quote


I was thinking about that myself lol.

Not many other business owners could sustain a rifles support like this for so long without a contract.
May be expensive, but the made to order business model means that hes still around.
10/17/2025 8:48:26 PM EDT
[Last Edit: lew][Edited] [#30]
Quote History
Originally Posted By TheOtherDave:
Thanks-I was more meaning how accuracy is. I have an early 3 digit XCR I don’t use a lot but might consider SBRing in .300BLK. I’d shoot subs 90% of the time..
View Quote


All three of my RobArms barrels- 2x 5.56 and 1x 6.5CM- give .65-.75" groups with decent factory ammo. I wouldn't hesitate to get the Blackout barrel if that's the direction you wish to take.

ETA: Ten round groups at 100m.

Sold one of my ARs, leaving me with one piston AR, and ordered another 16" 5.56 XCR-L. Saw they had the 1:9 twist barrel with Keymod upper for $500 off. The 1:9 in my 4-digit 16" shoots 75/77 gr. just fine, and the dickmod will be covered up with a pic rail section and rail covers, so why not save some bucks.
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
10/24/2025 8:29:22 AM EDT
[#31]
When I had my 9” 300 blk barrel, it was the most accurate 300 blk that I have shot, amongst a multitude of AR-15’s, with a wide variety of ammo. Rob Arm barrels shoot very very well.
Major Captain of Seaborne Party Operations for the North Atlantic Ocean
10/31/2025 9:56:47 AM EDT
[Last Edit: Paulie771][Edited] [#32]
Anyone ordered or handled a F5 ACR stock recently? I know the first ones were wobbly bastards but the Gen 2's seem to be much better. Different material and stronger lock up. Wondering if F5 is using the Gen 2 on the XCR package they offer or if they're burning through their old stock of the first ones.

ETA: It's for my 14.5" 6.5CM XCR-M.  Decided to go away from the DMR role and change it into a more GPR set up w/ my 1-8x PA PLX-c.  Makes it a svelte 10.5# as shown:
“Always love your country — but never trust your government!" - Robert Novak
12/28/2025 6:29:43 AM EDT
[#33]
I am making this post here in order to not derail a thread elsewhere and is referenced as such.


The observations experiences and comments posted by the contributors to this thread make it worth reading of it in it's entirety.

My first experience with the XCR was firing the 12th production XCR sold at retail. That opportunity came in August of 2006.

Let's dive into some of the engineering and design of the XCR that makes it stand head and shoulders above all other 3rd generation carbines.

Let's look at the Bolt Carrier Group, it's Operating Rod Interface and the Barrel Breeching.

• No Tilt No Bind Carrier

Regardless of how the forward end of the op rod is powered, the aft end features a longitudinal rectangular lug which fits into a corresponding recess cut into the bolt carrier where the two pieces interface.
The length of this longitudinal cut is just slightly longer than the lug on the op rod.
 In the recoil phase of operation the the aft end of the lug bears against the aft end of the carrier interface cut, in effect dragging the Bolt Carrier Group backwards by the back end.  

In return to battery phase the situation is reversed with the lug sliding ever so slightly forward and bearing against the front of the recess. The BCG is now being pulled forward at the the forward end of the interface cut.

In this way carrier tilt and binding are practically eliminated, friction induced energy losses are reduced to miniscule, less energy is needed to operate the action, wear is reduced and smoothness of cycling is increased.

• High Ride Magazine
The one piece bolt is forged with an integral cam lug protruding from it's side. This allows for a smaller diameter bolt body than any other design.    
The smaller bolt body diameter allows for deeper feed lip clearance cuts in the bolt carrier.  Which in turn allows the magazines feed lips to sit higher in the rifle and present rounds closer to bore center line. Closer than any other rifle I know of.  


• Force Feed
The bolts three massive locking lug span a larger diameter than radial multi lug bolts do.
The lug at the 6 o'clock position reaches deeper into the magazine and engages more surface area of the cartridge cases base.
This increases reliability in stripping rounds from the magazine. The bolt locking lug cut out in the barrel extension located at the 6 o'clock position is wide and deep. It's more of a feed chute than a feed ramp.  Bullet, case neck and shoulder are positively guided to the chamber.    When all this is combined, feeding rounds is like throwing hotdogs down the hallway.

• Max Extraction
In the recoil phase the carrier travels rearward a short distance before the straight part of cam path cut into the the carrier begins to curve and causes the the bolt to begin rotating.
 This, A. gives time for the carrier to build inertia and B. time for residual chamber pressure to bleed off to zero or near it.
A+B= more energy in the carrier and vastly reduced case grip on the chamber walls for easier extraction.

• Direct Ejection
When the bolt starts rotating, the left locking lug engages a ramp in the barrel extension. This ramped cam action gives a 23 to 1 mechanical advantage and slow positive initial extraction same as made famous by the Mauser 98.

The bolts right locking lug features an impressive T-slot extractor that can not slip off the cartridge rim and is prevented from doing so by the barrel extension.  The ejector is rigid and fixed in the left side of the upper.
Combine the above with the previous • point, when the BCG goes back the spent case is going back with it and getting kicked out like the obnoxious party guest.


The XCR's barrel bore center line is very low in relationship to the top of the butt plate. This also is a contributor to how the XCR has less muzzle climb than the other 3rd Gen designs.

12/28/2025 10:00:32 AM EDT
[#34]
Quote History
Originally Posted By Paulie771:
Anyone ordered or handled a F5 ACR stock recently? I know the first ones were wobbly bastards but the Gen 2's seem to be much better. Different material and stronger lock up. Wondering if F5 is using the Gen 2 on the XCR package they offer or if they're burning through their old stock of the first ones.

ETA: It's for my 14.5" 6.5CM XCR-M.  Decided to go away from the DMR role and change it into a more GPR set up w/ my 1-8x PA PLX-c.  Makes it a svelte 10.5# as shown:
https://i.imgur.com/H8WUTAg.jpeg
View Quote


Ive never tried out any of the ACR stocks, been happy with the normal XCR stock myself, although I could go for a different, wider, cheekpiece.
12/28/2025 10:12:17 AM EDT
[Last Edit: Jkees][Edited] [#35]
Quote History
Originally Posted By B44T:
I am making this post here in order to not derail a thread elsewhere and is referenced as such.


The observations experiences and comments posted by the contributors to this thread make it worth reading of it in it's entirety.

My first experience with the XCR was firing the 12th production XCR sold at retail. That opportunity came in August of 2006.

Let's dive into some of the engineering and design of the XCR that makes it stand head and shoulders above all other 3rd generation carbines.

Let's look at the Bolt Carrier Group, it's Operating Rod Interface and the Barrel Breeching.

• No Tilt No Bind Carrier

Regardless of how the forward end of the op rod is powered, the aft end features a longitudinal rectangular lug which fits into a corresponding recess cut into the bolt carrier where the two pieces interface.
The length of this longitudinal cut is just slightly longer than the lug on the op rod.
 In the recoil phase of operation the the aft end of the lug bears against the aft end of the carrier interface cut, in effect dragging the Bolt Carrier Group backwards by the back end.  

In return to battery phase the situation is reversed with the lug sliding ever so slightly forward and bearing against the front of the recess. The BCG is now being pulled forward at the the forward end of the interface cut.

In this way carrier tilt and binding are practically eliminated, friction induced energy losses are reduced to miniscule, less energy is needed to operate the action, wear is reduced and smoothness of cycling is increased.

• High Ride Magazine
The one piece bolt is forged with an integral cam lug protruding from it's side. This allows for a smaller diameter bolt body than any other design.    
The smaller bolt body diameter allows for deeper feed lip clearance cuts in the bolt carrier.  Which in turn allows the magazines feed lips to sit higher in the rifle and present rounds closer to bore center line. Closer than any other rifle I know of.  


• Force Feed
The bolts three massive locking lug span a larger diameter than radial multi lug bolts do.
The lug at the 6 o'clock position reaches deeper into the magazine and engages more surface area of the cartridge cases base.
This increases reliability in stripping rounds from the magazine. The bolt locking lug cut out in the barrel extension located at the 6 o'clock position is wide and deep. It's more of a feed chute than a feed ramp.  Bullet, case neck and shoulder are positively guided to the chamber.    When all this is combined, feeding rounds is like throwing hotdogs down the hallway.

• Max Extraction
In the recoil phase the carrier travels rearward a short distance before the straight part of cam path cut into the the carrier begins to curve and causes the the bolt to begin rotating.
 This, A. gives time for the carrier to build inertia and B. time for residual chamber pressure to bleed off to zero or near it.
A+B= more energy in the carrier and vastly reduced case grip on the chamber walls for easier extraction.

• Direct Ejection
When the bolt starts rotating, the left locking lug engages a ramp in the barrel extension. This ramped cam action gives a 23 to 1 mechanical advantage and slow positive initial extraction same as made famous by the Mauser 98.

The bolts right locking lug features an impressive T-slot extractor that can not slip off the cartridge rim and is prevented from doing so by the barrel extension.  The ejector is rigid and fixed in the left side of the upper.
Combine the above with the previous • point, when the BCG goes back the spent case is going back with it and getting kicked out like the obnoxious party guest.


The XCR's barrel bore center line is very low in relationship to the top of the butt plate. This also is a contributor to how the XCR has less muzzle climb than the other 3rd Gen designs.

View Quote


Very good summary of the actually great features of the XCR over something like an ar-15.
I always feel like robinson arms advertises the wrong thing about the rifles and leaves most new consumers with the idea that its some kind of gimmick gun. (Although it had a legitimate reason in 2004)
To most buyers quick barrel change is a pointless endeavor because it still requires the zero to be confirmed after the change. I just run my XCR the same setup as an AR for this purpose, a whole new upper with a slaved and zeroed optic, with the added bonus of saving on parts since the carrier and recoil spring are so easy to swap, I just keep one of those to move between uppers.

Another feature of the XCR is the size of the bolt lugs. As higher pressure rounds are becoming more and more relevant, the original design criteria of 6.8 SPC makes the XCR more future proof to be adapted to high pressure or hybrid/alloy cased rounds. I think if you had a one to one stress comparison of the same materials, the XCR bolt and barrel lockup could handle much more chamber pressure before failure than the smaller lugs of an AR-15

I just wish RA would make the purchasing of new complete uppers more intuitive on their website.

Still thousands of rounds into mine and have never had a jam or any kind of malfunction

Im really close to selling my last duty use AR and just swapping to XCR’s entirely.
12/29/2025 11:21:13 AM EDT
[#36]
XCR at about 6:40 in.

https://youtu.be/mepVLGvss3k?si=ClbQmmzZqFNIwkRa
12/30/2025 1:33:05 AM EDT
[Last Edit: B44T][Edited] [#37]
Quote History
Originally Posted By Jkees:


Very good summary of the actually great features of the XCR over something like an ar-15.
I always feel like robinson arms advertises the wrong thing about the rifles and leaves most new consumers with the idea that its some kind of gimmick gun. (Although it had a legitimate reason in 2004)
To most buyers quick barrel change is a pointless endeavor because it still requires the zero to be confirmed after the change. I just run my XCR the same setup as an AR for this purpose, a whole new upper with a slaved and zeroed optic, with the added bonus of saving on parts since the carrier and recoil spring are so easy to swap, I just keep one of those to move between uppers.

Another feature of the XCR is the size of the bolt lugs. As higher pressure rounds are becoming more and more relevant, the original design criteria of 6.8 SPC makes the XCR more future proof to be adapted to high pressure or hybrid/alloy cased rounds. I think if you had a one to one stress comparison of the same materials, the XCR bolt and barrel lockup could handle much more chamber pressure before failure than the smaller lugs of an AR-15

I just wish RA would make the purchasing of new complete uppers more intuitive on their website.

Still thousands of rounds into mine and have never had a jam or any kind of malfunction

Im really close to selling my last duty use AR and just swapping to XCR’s entirely.
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By Jkees:
Originally Posted By B44T:
I am making this post here in order to not derail a thread elsewhere and is referenced as such.


The observations experiences and comments posted by the contributors to this thread make it worth reading of it in it's entirety.

My first experience with the XCR was firing the 12th production XCR sold at retail. That opportunity came in August of 2006.

Let's dive into some of the engineering and design of the XCR that makes it stand head and shoulders above all other 3rd generation carbines.

Let's look at the Bolt Carrier Group, it's Operating Rod Interface and the Barrel Breeching.

• No Tilt No Bind Carrier

Regardless of how the forward end of the op rod is powered, the aft end features a longitudinal rectangular lug which fits into a corresponding recess cut into the bolt carrier where the two pieces interface.
The length of this longitudinal cut is just slightly longer than the lug on the op rod.
 In the recoil phase of operation the the aft end of the lug bears against the aft end of the carrier interface cut, in effect dragging the Bolt Carrier Group backwards by the back end.  

In return to battery phase the situation is reversed with the lug sliding ever so slightly forward and bearing against the front of the recess. The BCG is now being pulled forward at the the forward end of the interface cut.

In this way carrier tilt and binding are practically eliminated, friction induced energy losses are reduced to miniscule, less energy is needed to operate the action, wear is reduced and smoothness of cycling is increased.

• High Ride Magazine
The one piece bolt is forged with an integral cam lug protruding from it's side. This allows for a smaller diameter bolt body than any other design.    
The smaller bolt body diameter allows for deeper feed lip clearance cuts in the bolt carrier.  Which in turn allows the magazines feed lips to sit higher in the rifle and present rounds closer to bore center line. Closer than any other rifle I know of.  


• Force Feed
The bolts three massive locking lug span a larger diameter than radial multi lug bolts do.
The lug at the 6 o'clock position reaches deeper into the magazine and engages more surface area of the cartridge cases base.
This increases reliability in stripping rounds from the magazine. The bolt locking lug cut out in the barrel extension located at the 6 o'clock position is wide and deep. It's more of a feed chute than a feed ramp.  Bullet, case neck and shoulder are positively guided to the chamber.    When all this is combined, feeding rounds is like throwing hotdogs down the hallway.

• Max Extraction
In the recoil phase the carrier travels rearward a short distance before the straight part of cam path cut into the the carrier begins to curve and causes the the bolt to begin rotating.
 This, A. gives time for the carrier to build inertia and B. time for residual chamber pressure to bleed off to zero or near it.
A+B= more energy in the carrier and vastly reduced case grip on the chamber walls for easier extraction.

• Direct Ejection
When the bolt starts rotating, the left locking lug engages a ramp in the barrel extension. This ramped cam action gives a 23 to 1 mechanical advantage and slow positive initial extraction same as made famous by the Mauser 98.

The bolts right locking lug features an impressive T-slot extractor that can not slip off the cartridge rim and is prevented from doing so by the barrel extension.  The ejector is rigid and fixed in the left side of the upper.
Combine the above with the previous • point, when the BCG goes back the spent case is going back with it and getting kicked out like the obnoxious party guest.


The XCR's barrel bore center line is very low in relationship to the top of the butt plate. This also is a contributor to how the XCR has less muzzle climb than the other 3rd Gen designs.



Very good summary of the actually great features of the XCR over something like an ar-15.
I always feel like robinson arms advertises the wrong thing about the rifles and leaves most new consumers with the idea that its some kind of gimmick gun. (Although it had a legitimate reason in 2004)
To most buyers quick barrel change is a pointless endeavor because it still requires the zero to be confirmed after the change. I just run my XCR the same setup as an AR for this purpose, a whole new upper with a slaved and zeroed optic, with the added bonus of saving on parts since the carrier and recoil spring are so easy to swap, I just keep one of those to move between uppers.

Another feature of the XCR is the size of the bolt lugs. As higher pressure rounds are becoming more and more relevant, the original design criteria of 6.8 SPC makes the XCR more future proof to be adapted to high pressure or hybrid/alloy cased rounds. I think if you had a one to one stress comparison of the same materials, the XCR bolt and barrel lockup could handle much more chamber pressure before failure than the smaller lugs of an AR-15

I just wish RA would make the purchasing of new complete uppers more intuitive on their website.

Still thousands of rounds into mine and have never had a jam or any kind of malfunction

Im really close to selling my last duty use AR and just swapping to XCR’s entirely.


You raise some good points that are worth expounding on.


To clarify for non XCR owners and the firearms curious.

The easy barrel change feature of the XCR was never intended to be a means of, or used for, hot barrel swaps as is prescribed for belt fed machine guns. Those have latches or levers to retain their barrels.
The XCR uses a hex socket head bolt instead of a latch and requires a common hex wrench. Available at hardware home improvement industrial supply auto parts and farm stores everywhere.


RA intended their easy barrel change system to make caliber and configuration changes easy to do in the field by the end user without specialized tools or fixtures.

By coincidence it also makes the standard XCR L reducible to fit into an 18 inch mechanics tool box with room left over for magazines, a weapon light, eye pro, ear pro. Plus a handgun. And magazines.
1/2/2026 12:51:28 PM EDT
[#38]
Quote History
Originally Posted By Jkees:
Im really close to selling my last duty use AR and just swapping to XCR’s entirely.
View Quote


I've done almost that- retaining one AR (not counting the dedicated .22), and that has a Superlative piston kit. My brother swapped out his large-frame AR for a .308 XCR-M. Only reason I'd buy another AR would be for some specific retro application.

XCRs are boring: they just work. Add the accessories- optic, sling, light/laser, suppressor, et al...- you want, adjust the gas (or don't) and you're off. No fiddling. No need to upgrade anything.

RA needs to improve their marketing game, though, to be fair, they seem to be ramping up. The rifles sell themselves, but people need to know they exist first. Tens of thousands are out there thus far, so there's that.
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
1/7/2026 11:26:04 PM EDT
[#39]
Quote History
Originally Posted By lew:


I've done almost that- retaining one AR (not counting the dedicated .22), and that has a Superlative piston kit. My brother swapped out his large-frame AR for a .308 XCR-M. Only reason I'd buy another AR would be for some specific retro application.

XCRs are boring: they just work. Add the accessories- optic, sling, light/laser, suppressor, et al...- you want, adjust the gas (or don't) and you're off. No fiddling. No need to upgrade anything.

RA needs to improve their marketing game, though, to be fair, they seem to be ramping up. The rifles sell themselves, but people need to know they exist first. Tens of thousands are out there thus far, so there's that.
View Quote



Honestly, they need to sharpen their pencils a bit and bring the price down. $2250 for a rifle is a lot of money today-it’s a lot of money period. The XCR is the first gun that I have ever had a desire to buy a second one and I just can’t justify it and it’s not like I’m poor living in a trailer park.
Never make another person a priority when they merely see you as an option...

"Some People Are Like Slinkies. They're Not Really Good For Anything, But They Bring a Smile To Your Face When Pushed Down The Stairs."
1/8/2026 12:07:23 AM EDT
[#40]
Quote History
Originally Posted By TheOtherDave:
Honestly, they need to sharpen their pencils a bit and bring the price down. $2250 for a rifle is a lot of money today-it’s a lot of money period. The XCR is the first gun that I have ever had a desire to buy a second one and I just can’t justify it and it’s not like I’m poor living in a trailer park.
View Quote


Amen to that.

Now it's not a straight comparison, but their clearance/closeout rifles are $1600 and change, so maybe the price for the regular options can be somewhere in the middle. They are well-made, and that's great, but folks are practically giving ARs away.
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
1/8/2026 1:19:00 AM EDT
[#41]
I haven't kept up with prices and what's on the market.

What is the average price these days of other 3rd gen carbines with monolithic upper, adjustable gas,
piston operated, easy change barrel, ambi controls, folding adjustable collapsible stock ?
1/8/2026 1:52:50 AM EDT
[Last Edit: ClickClickBoom1][Edited] [#42]
Quote History
Originally Posted By B44T:
I haven't kept up with prices and what's on the market.

What is the average price these days of other 3rd gen carbines with monolithic upper, adjustable gas,
piston operated, easy change barrel, ambi controls, folding adjustable collapsible stock ?
View Quote



There are a few in theory but none in practice.
- SCAR is gone and never really had any conversations.
- ACR is gone.
- Bren 805 and Bren 2 have easy to change barrels but none are available.
- MCX and Spear LT have easy to change barrels but nothing in practice.
- Beretta ARX has quick change barrels but is disconnected and no conversions were ever available.
- Aug has quick change barrels but only 556 and 300 blk.
-ARAK 21 has .300 blk and 7.63x39 barrels available

-PWS has there UXR at $2600
-Desert Tech Wolverine


I'm sure there are others and all fall in line with the above list.
1/8/2026 4:55:15 PM EDT
[#43]
Quote History
Originally Posted By TheOtherDave:



Honestly, they need to sharpen their pencils a bit and bring the price down. $2250 for a rifle is a lot of money today-it’s a lot of money period. The XCR is the first gun that I have ever had a desire to buy a second one and I just can’t justify it and it’s not like I’m poor living in a trailer park.
View Quote

They aren’t cheap, but quality never is.
1/8/2026 11:58:40 PM EDT
[#44]
Quote History
Originally Posted By TheOtherDave:



Honestly, they need to sharpen their pencils a bit and bring the price down. $2250 for a rifle is a lot of money today-it’s a lot of money period. The XCR is the first gun that I have ever had a desire to buy a second one and I just can’t justify it and it’s not like I’m poor living in a trailer park.
View Quote


It’s not that bad. I bet the new ambi Geissele super duty mod1a will be close to that. KAC KS 5.56 rifles will be more. It’s still less than a SCAR-16s, B&T APC223, and HK MR556A4.
1/9/2026 1:04:28 AM EDT
[#45]
Quote History
Originally Posted By stevelish:

They aren’t cheap, but quality never is.
View Quote


And I find myself coming back to that. Life's too short to put up with sub-par.

RA runs sales five or six times a year. Usually 10% off. Sign up for their email list.
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
1/11/2026 10:36:34 PM EDT
[#46]
https://www.instagram.com/p/DKOJG4MAR5d/?utm_source=ig_web_copy_link&igsh=MzRlODBiNWFlZA==


I've had an XCR-L for about 20 months now and competed with it four times, and while I really do like it- I do have concerns. The main being that spare or replacement parts and maintenance are all proprietary; what if Robinson closes? They are a small manufacturer, and if they fold --then what?

I think this is a legitimate concern considering that we have seen a few AR manufacturers close in the past few years. Granted, they were budget brands, but AR sales have slowed to a crawl recently, and I can only assume the XCR line has as well. To that point I only have about 2,000 rounds through mine, and many of you report that yours have run like a top for years --but everything eventually breaks or needs maintenance at some point.

It has crossed my mind from time to time to consider selling mine, despite enjoying it.
1/11/2026 11:19:23 PM EDT
[#47]
Anyone possibly interested in trading your L for my M, hit me up.
“Always love your country — but never trust your government!" - Robert Novak
1/12/2026 2:11:03 PM EDT
[#48]
Doomsayers have been assuring us since 1999 that Robinson Armament is going under any day now.  

ACR, ARX 100, SCAR, a plethora of AR piston uppers all have come and gone.

If you like the rifle and want to keep the rifle, search the Internet to find out what parts have worn in high round count examples and stash whatever makes you comfortable.

RA is happy to sell you as many spare parts as you can afford to buy.



1/12/2026 6:46:48 PM EDT
[#49]
Quote History
Originally Posted By B44T:
Doomsayers have been assuring us since 1999 that Robinson Armament is going under any day now.  

ACR, ARX 100, SCAR, a plethora of AR piston uppers all have come and gone.

If you like the rifle and want to keep the rifle, search the Internet to find out what parts have worn in high round count examples and stash whatever makes you comfortable.

RA is happy to sell you as many spare parts as you can afford to buy.



View Quote


Kind of where I am at on that.
They have proven that somehow they can sustain their business model.
Not sure I understand how, but 20 years of never being super popular would have put any other gun company out of business 10 years ago.
And parts are easy to order plenty of, if you even need them.
1/13/2026 1:18:44 PM EDT
[#50]
The answer's pretty damned obvious: buy spare parts now while they are available and not terribly expensive.

The rifle's been around for twenty years. Other boutique rifles have come and gone, yet the XCR is still around. While the future is never guaranteed, RA's navigated tough times in the industry before.
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken

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