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Posted: 12/8/2007 8:43:22 PM EST
Feel free to post pictures of yours and say a little about it. Please if you have time write out what your carbine consists of. I am still somewhat a newbie to this world and it would be awesome to have a write up of the viewable parts.

What would you guys suggest I look at? I have been looking at:

Sig 556
POF 415
Rob Arms XCR

Is there something coming out soon that I should be looking at or waiting for? I am open to any and all suggestions except something having to do with direct impingement. Thanks for any and all input ahead of time!
Link Posted: 12/8/2007 8:54:45 PM EST
[#1]
I'd recommend LWRC above those.  

Magpul Masada hopefully will come out middle of next year and looks very promising.

LMT is also coming out with a piston as well.  

Link Posted: 12/8/2007 9:40:22 PM EST
[#2]
i really like what ive seen of the xcr in videos so far, im fiendin' real bad for one actually....so if you get one, plz give to me k thnnx?
Link Posted: 12/9/2007 12:56:07 AM EST
[#3]
Look at LWRC as well.  It would take way too many paragraphs to tell you why I chose it over the others.  Learn about it and decide for yourself.
Link Posted: 12/9/2007 6:10:21 AM EST
[#4]
I have read some about it, I did not see it being the most recommended though. I guess I need to take another look at it.
Link Posted: 12/9/2007 8:13:27 AM EST
[#5]
Devl, Jesse is trying to get a return address.
Link Posted: 12/9/2007 10:37:58 AM EST
[#6]
Ive owned my LWRC for a couple of weeks now and love it. Very smooth shooting and reliable. The piston design is top notch. I rank it everybit as good as my 2 other POF AR's.
The XCR's and Sigs are nice but putting a piston on an AR platform makes for a pretty perfect rifle!
Im 100% happy with my LWRC and the POF's.
Im going to try and get some pictures up of my LWRC.
Good luck with your decision.
Link Posted: 12/9/2007 10:39:41 AM EST
[#7]
Here is a pic of my 2 POF AR's. The 16'' with the predator 12''SX rail is my precision shooter and the pinned 14.5 carbine with the 9" rail is Home defense gun.



Dont let people fool you into thinking that piston AR's are not accurate. The 16'' POF shoots every bit as good as my MK12 mod 1 SPR.
Link Posted: 12/9/2007 2:08:19 PM EST
[#8]
Man, those are nice looking' rigs.  Have you ever had a problem with the silicon nickel plating scraping off from the inside of the upper receiver on your POF's?  Just asking because I'm having that problem with my new 415.
Link Posted: 12/9/2007 2:15:29 PM EST
[#9]
i would say in this order. LMT "when its avilable", LWCR, or POF.
Link Posted: 12/9/2007 3:13:23 PM EST
[#10]

Quoted:
Man, those are nice looking' rigs.  Have you ever had a problem with the silicon nickel plating scraping off from the inside of the upper receiver on your POF's?  Just asking because I'm having that problem with my new 415.


My first POF( the carbine) is the older version POF which doesnt have the coating but my second one the 16'' recce does have it and I do not see any scraping or wearing at all. I have roughly a 1000 rounds or so through it.
Link Posted: 12/9/2007 3:58:15 PM EST
[#11]

Quoted:
i would say in this order. LMT "when its avilable", LWCR, or POF.



Or:

1. Hk 416 in 10.4"

2. LMT MRP / P

3. LWRC SRT in 10.5"

4. POF in 11.5"

Get your checkbook out though, as piston action does not come cheap.
Link Posted: 12/9/2007 6:18:42 PM EST
[#12]
Yeah, I was figuring I would be spending between $1500-$2200 depending on what I went with and how padded the package I chose was.

From what I read about the POF I figured it would be top dog with that coating it has that makes it so that it is self lubricating?

Haha, no one has really said anything good about the XCR. Is it because its the kind of gun that once you buy it, thats what you have? Not so much transformering it up?

Also, does anyone have any roundabout time they expect the HK 416 to be released onto the civilian market?

Link Posted: 12/9/2007 6:31:33 PM EST
[#13]
People like different things when it comes down to it so what anyone here finds best may not be for you. I suggest you just think of all ends in design, features, cost, replacement parts and availability and decide which is right for you.
I did and own a sweet POF 16 inch on a Mega lower. Until the Masada is actually in a production model and out, there's not one of the rifles mentioned in this thread I'd prefer more.
The POF design, chrome plating and silicon nickel coating are just that nice to me.

Link Posted: 12/9/2007 6:33:46 PM EST
[#14]
I highly recommend the LWRC.
Those guys have Engineered every detail of their weapon far beyond what any of the others do.  
After researching them as much as I could, I visited their factory and got an in-depth tour of everything that goes into their builds.  They don't cut any corners.
I've played with POF, HK, SCAR, XCR, and even the Colt prototype (no, I didn't shoot it).
I still need to get my hands on an LMT and Masada.
I would take LWRC over any of them.
I'm convinced that it is the best AR and best piston rifle built.
Link Posted: 12/9/2007 6:36:22 PM EST
[#15]

Quoted:
I highly recommend the LWRC.
Those guys have Engineered every detail of their weapon far beyond what any of the others do.  
After researching them as much as I could, I visited their factory and got an in-depth tour of everything that goes into their builds.  They don't cut any corners.
I've played with POF, HK, SCAR, XCR, and even the Colt prototype (no, I didn't shoot it).
I still need to get my hands on an LMT and Masada.
I would take LWRC over any of them.
I'm convinced that it is the best AR and best piston rifle built.


WOW! Strong words! Im happy to hear that!
Link Posted: 12/9/2007 7:24:32 PM EST
[#16]

Quoted:

Quoted:
i would say in this order. LMT "when its avilable", LWCR, or POF.



Or:

1. Hk 416 in 10.4"

2. LMT MRP / P

3. LWRC SRT in 10.5"

4. POF in 11.5"

Get your checkbook out though, as piston action does not come cheap.



+1 i totaly agree, i almost forgot about the HK..
Link Posted: 12/9/2007 8:13:20 PM EST
[#17]
Link Posted: 12/9/2007 8:13:38 PM EST
[#18]
What about the ARES system?
Link Posted: 12/9/2007 8:35:29 PM EST
[#19]
Thanks for the info on the XCR. I definitely do not want to be investing in a system that could get dumped off in a couple of years and have to scavenge for overpriced/rare (because its out of production) parts.

Link Posted: 12/9/2007 8:43:51 PM EST
[#20]
Link Posted: 12/10/2007 4:02:09 AM EST
[#21]
No issues at all with either of my POFs! I cannot get these rifles to stop. The rail is large and the sights are rasied but as longas they are zero'd it doesnt bother me. The rail is built like a tank. No complaints with POF. Pretty damm accurate too.

MY LWRC is as sweet as anything out there. Awesome rail , well balanced, low recoil and muzzle rise. Ill get some accuaracy reports later on.

I love piston op AR15's. I dont think that Ill be going back anytime soon.
Link Posted: 12/10/2007 5:48:10 AM EST
[#22]

Quoted:
I'd recommend LWRC above those.  

LMT is also coming out with a piston as well.  Magpul Masada hopefully will come out middle of next year and looks very promising.



Ditto on the info above.
Link Posted: 12/10/2007 5:54:50 AM EST
[#23]
LOL, It really is funny the sensibility of those who put rifles like the HK416 and LMT piston system at the top of any list with never using them and/or there not even out yet or out in any number to really have a large enough experience base of opinions to make a fair judgment on.

(I do love it too when people here remark about not liking the height of the POF Predator rails but love the HK416 and fail to notice that HK modified the receiver from US spec M16/M4 receivers raising the receiver rail height up to mate with there higher handguard top rail height to go over there piston system making it about as high as the Predator.)

(as I'll point out again from MP5MachinenPistole's great Hk416 photo's on pg 2 of the Piston AR picture thread)
Piston AR pic thread



Atleast the POF, LWRC's, XCR's and Sig 556's have been out a while and all have there numbers of happy owners with different likes and dislikes.
All of them have had there problem rifles too as any manmade product can have something done wrong at times. That doesn't mean every single rifle does from that manufacturer though and will be in the future.

All those rifles can be good rifles from what I've seen, but in deciding about them I think unless you seem to put priority in the opinons of a limited number of guys on the net saying something is the bestest, bestest with very little detailed explaination why they feel that way and still nothing more than their opnion, than you really ought to look deeply into each rifle for yourself since it will be for you and not someone else.
Look deeper in thought into it's design, features, cost and possible needed repairs with cost and availability of those parts and repairs before anything else and decide for yourself with what you really feel is the best for you separate from the opinions of others.

Link Posted: 12/10/2007 7:04:49 AM EST
[#24]
I did not realize the XCR was practically another breed of carbine (meaning if something broke I would practically have to get an XCR part because its not interchangeable with most AR15 gear.

I will more strongly consider a POF or LWRC, and look into both of them more closely.

I am new to all of this stuff so the more KISS it is the better in my case.
Link Posted: 12/10/2007 2:25:11 PM EST
[#25]
Link Posted: 12/10/2007 3:30:56 PM EST
[#26]

Quoted:
I am aware that the HK416 raises your mounting platform, but I do not believe it raises it as much as the POF. If there is a difference, and I belive that there is, I'd be interested to know what it is.


Having shot both,

I can say that when I shot the 416 the extra height didn't bother me. It was just one mag but I didn't notice it.

When I shot the POF it did. Just one mag as well but i was thinking "man this aimpiont is high"

But i think that when I shoot an acog on an SIR

Mike
Link Posted: 12/10/2007 3:36:58 PM EST
[#27]

Quoted:
I am aware that the HK416 raises your mounting platform, but I do not believe it raises it as much as the POF. If there is a difference, and I belive that there is, I'd be interested to know what it is.


Having shot both,

I can say that when I shot the 416 the extra height didn't bother me. It was just one mag but I didn't notice it.

When I shot the POF it did. Just one mag as well but i was thinking "man this aimpiont is high"

But i think that when I shoot an acog on an SIR

Mike
Link Posted: 12/10/2007 4:55:30 PM EST
[#28]
Is it worth it buying the entire rifle, or would it be more wise to buy the LWRC upper or POF upper and then buying, say, an LMT lower?
Link Posted: 12/10/2007 5:02:07 PM EST
[#29]
Link Posted: 12/10/2007 5:21:14 PM EST
[#30]
I'd like to know the exact height difference between the HK416 top rail height and POF's Predator rail myself, if just to know out of curiosity. Either the way all can look as is now at the pictures of both and see the distances from the ejection port it's pretty close.
To me it looks so close it's really very little difference to be a moot point and the HK416 just that, high also.


On buying a whole rifle or just the upper and than put it on any lower you want there should be a difference in price overall, but that depends on what price you find a whole rifle for to start I'd say. There are good deals that can be found, but outside of that ordering and having a new one shipped should be as such.

With buying the lower separate and upper separate as I did, you can have more to your advantage of different places to get each and having both faster. Especially since there are dealers around who have uppers in stock for the POF's.
You can just order one from them and have it shipped straight to your door and get a nice lower from someone else to go to your FFL for the simple transfer cost and leave any wait time for direct from POF in the dust.
I know that's what I'll do if want another AR.
As it stands now too, if I do want another AR, it will be another POF.
Link Posted: 12/10/2007 5:22:01 PM EST
[#31]
The predator rail is high but damm! I would say that the rail being larger around the handguards takes more getting use too than the height of the rail. How did people get along when the carry handle was the only option. I personally like the higher rail because you can keep the buttstock where it belongs in your shoulder.
Im actually having to get use to the LWRC rail ( not that I dont love this ARM-R rail) now and will be installing a riser on my Eotech to bring it back up off of the flattop.
Link Posted: 12/10/2007 5:41:19 PM EST
[#32]

Quoted:
The predator rail is high but damm! I would say that the rail being larger around the handguards takes more getting use too than the height of the rail. How did people get along when the carry handle was the only option. I personally like the higher rail because you can keep the buttstock where it belongs in your shoulder.
Im actually having to get use to the LWRC rail ( not that I dont love this ARM-R rail) now and will be installing a riser on my Eotech to bring it back up off of the flattop.



I don't understand why some don't seem to like it as it really isn't an issue to me either. I very much like the Predator as there a great railed forearm the provides better structural support all around for the forearm, and the barrel to receiver connection since the Predator rail slides over the receiver to use it for movement support of the Predator and barrel nut over the barrel.

We're all different though so maybe they have shorter heads and necks.


(that is meant as a joke)


I've never really like the fact with the LWRC's too that you need to unscrew the top of the handguard to get to the piston action to clean. That means over time again and again those aluminum threads will start to wear down from it and eventually become loose and worn. You shouldn't need the clean the piston action everytime out as it's meant to go thousands of rounds but it will still need to be cleaned.
I also don't like the spring used in the piston action above the barrel as the HK416 uses also.
Springs get effected by heat beside compress and loose there strength and above the barrel especially at the chamber should get quite hot. It's just another spring to have replace to me. I very much like the POF design of not using one there and putting the return on the buffer spring alone which I mean to mainly use Tubb's chrome silicon buffer springs for which should last a very long time and won't have any heat put on them even though chrome silicon has a higher heat tolerance.

Link Posted: 12/10/2007 6:01:47 PM EST
[#33]
Is it worth paying more for the Predator rails or would the basic $1,000 upper be enough? Or should I shell out the extra $250-$250 for the rails?
Link Posted: 12/10/2007 6:14:47 PM EST
[#34]

Quoted:

Quoted:
The predator rail is high but damm! I would say that the rail being larger around the handguards takes more getting use too than the height of the rail. How did people get along when the carry handle was the only option. I personally like the higher rail because you can keep the buttstock where it belongs in your shoulder.
Im actually having to get use to the LWRC rail ( not that I dont love this ARM-R rail) now and will be installing a riser on my Eotech to bring it back up off of the flattop.



I don't understand why some don't seem to like it as it really isn't an issue to me either. I very much like the Predator as there a great railed forearm the provides better structural support all around for the forearm, and the barrel to receiver connection since the Predator rail slides over the receiver to use it for movement support of the Predator and barrel nut over the barrel.

We're all different though so maybe they have shorter heads and necks.


(that is meant as a joke)


I've never really like the fact with the LWRC's too that you need to unscrew the top of the handguard to get to the piston action to clean. That means over time again and again those aluminum threads will start to wear down from it and eventually become loose and worn. You shouldn't need the clean the piston action everytime out as it's meant to go thousands of rounds but it will still need to be cleaned.
I also don't like the spring used in the piston action above the barrel as the HK416 uses also.
Springs get effected by heat beside compress and loose there strength and above the barrel especially at the chamber should get quite hot. It's just another spring to have replace to me. I very much like the POF design of not using one there and putting the return on the buffer spring alone which I mean to mainly use Tubb's chrome silicon buffer springs for which should last a very long time and won't have any heat put on them even though chrome silicon has a higher heat tolerance.



The threads on the rail will outlast your weapon and the spring does not loose strength and get worn out from heat on the LWRC.  Your concerns are unfounded.  The threads only need to apply clamping force the the other side of the rail to remain rigid and since the screws are captured it is impossible to cross thread them.  They would have to be worn completely away to cause an issue.  Your concerns on the screws might become an issue long after you are dead if you are concerned with your great grandchildren's inheritance from your own grandchildren. Your QD optics mounts will have worn out LONG before those screws do.  
Link Posted: 12/10/2007 6:16:29 PM EST
[#35]

Quoted:
Is it worth it buying the entire rifle, or would it be more wise to buy the LWRC upper or POF upper and then buying, say, an LMT lower?


If you buy the whole rifle the lower will be covered under warranty, other than that no advantage.
Link Posted: 12/10/2007 6:42:34 PM EST
[#36]
Achilles1 , you are in fact correct in that the return spring on the LWRC piston will eventually wear out. The screws on the rail will too. Maybe there is enough meet to install a small stainless helicoil on the rail! Just like any other part on the rifle you will have to replace them over time. The screws and the return spring will probably last 30,000 plus rounds. Way more than I will ever shoot out of the gun.
That spring on the piston does help out. It plays a small part in reducing recoil. I like my guns to have no kick!

Buying a complete weapon is nice. I bought my second POF as a complete rifle. The lower reciever from POF is extremely well made and very sexy. It made me feel all warm and fuzzy inside when I was walking out of the Gun Shop with that rifle!
Link Posted: 12/10/2007 7:04:29 PM EST
[#37]

Quoted:
Achilles1 , you are in fact correct in that the return spring on the LWRC piston will eventually wear out. The screws on the rail will too. Maybe there is enough meet to install a small stainless helicoil on the rail! Just like any other part on the rifle you will have to replace them over time. The screws and the return spring will probably last 30,000 plus rounds. Way more than I will ever shoot out of the gun.
That spring on the piston does help out. It plays a small part in reducing recoil. I like my guns to have no kick!

Buying a complete weapon is nice. I bought my second POF as a complete rifle. The lower reciever from POF is extremely well made and very sexy. It made me feel all warm and fuzzy inside when I was walking out of the Gun Shop with that rifle!


Thanks for the support in being more realistic SRTM4. I know they will it's just not worth it to argue about it anymore though even with all intentions being good.

I can see the extra return spring adding in a little recoil reduction though and I'm sure it will last for thousands of rounds as other recoil springs do, it's just something I'd personally rather do without.

Is the LWRC piston action spring music wire, stainless or chrome silicon by the way?

(for anyone who knows)


 On the lighter side part of me has always found the recoil of the M16/M4 and AR's in general to be very light anyways.
Get use to or even put a couple hundred rounds through a G3 or an M14 and the AR's recoil is nothing. ..................................................................
Link Posted: 12/10/2007 7:22:22 PM EST
[#38]
Well put Achilles. I know where you are coming from. The least amount of parts that your weapon has, the less chance you have those parts to break!
I also like your loyalty to POF. Those rifles tend to do that to you. Then again all piston AR's are doing it to me!
Link Posted: 12/11/2007 6:39:18 AM EST
[#39]

Quoted:
Well put Achilles. I know where you are coming from. The least amount of parts that your weapon has, the less chance you have those parts to break!
I also like your loyalty to POF. Those rifles tend to do that to you. Then again all piston AR's are doing it to me!


I like the POF's alot, but it's just a tool to me. Any loyalty I have towards them doesn't come from anything more than I like the design and function from it the most.
I enjoy shooting firearms and buy and keep them as tools for protection and defense of myself, my family and my friends beside use in shooting sports, but they are just tools.
Besides that though I have always enjoyed the technical aspects and understanding there designs and function traits better which is why I study the different firearms I find interesting and discuss them here (which is hopefully enjoyable) when there's a good discussion going on I find interesting also.

This is where I express in threads to others what I feels are good and bad traits of them comparatively, buts no different to me in describing and recommending what I'd feel is a good hammer for someone looking or talking about them in such a discussion.

If I didn't feel the POF's were truely a good rifle in build and design, I wouldn't
recommend and discuss them compared to others. In the end though it still comes down to the person deciding for themselves which is best to them and I know what I like best is just what's best to and for me. That doesn't mean it will be for someone else.

The POF's just have what I feel is a very straight forward, simple and traditional piston gas system more similar to rifles like the M14 which is one of the best around to me. Not perfect, just very good.

Link Posted: 12/11/2007 7:14:37 AM EST
[#40]

Quoted:
I've never really like the fact with the LWRC's too that you need to unscrew the top of the handguard to get to the piston action to clean. That means over time again and again those aluminum threads will start to wear down from it and eventually become loose and worn. You shouldn't need the clean the piston action everytime out as it's meant to go thousands of rounds but it will still need to be cleaned.
I also don't like the spring used in the piston action above the barrel as the HK416 uses also.
Springs get effected by heat beside compress and loose there strength and above the barrel especially at the chamber should get quite hot. It's just another spring to have replace to me. I very much like the POF design of not using one there and putting the return on the buffer spring alone which I mean to mainly use Tubb's chrome silicon buffer springs for which should last a very long time and won't have any heat put on them even though chrome silicon has a higher heat tolerance.


It is not a coincidence that these two rifles are "self regulating" whereas the others are not.  The spring serves a purpose.  
This feature allows the rifle to use only as much of the available gas as it needs to reliably cycle the weapon.  The excess gas bleeds off.
This won't matter to your typical weekend shooter.  In good conditions, there are no reliability issues with a quality AR.
This becomes an advantage though when you encounter variations in ammo.  Underpowered ammo, overpowered ammo; it doesn't matter (to an extent) because the piston self regulates.
What if fine sand gets into your receiver or you don't have the chance to clean for a long time?  The weapon will require a little more power to cycle correctly.  Self regulating piston takes care of that.
How 'bout SBR?  Shortening the barrel drastically changes the amount of pressure going through the gas port.  That is why SBR ARs are known to be finicky and require careful tuning.  Slap a self-regulating piston in there and your problem is solved.


As to your concern about the screws and spring wearing out.... forget it.  Other major components of your rifle (i.e. barrel, bolt) will wear out long before either of those parts.

Link Posted: 12/11/2007 8:28:46 AM EST
[#41]

Quoted:

Quoted:
I've never really like the fact with the LWRC's too that you need to unscrew the top of the handguard to get to the piston action to clean. That means over time again and again those aluminum threads will start to wear down from it and eventually become loose and worn. You shouldn't need the clean the piston action everytime out as it's meant to go thousands of rounds but it will still need to be cleaned.
I also don't like the spring used in the piston action above the barrel as the HK416 uses also.
Springs get effected by heat beside compress and loose there strength and above the barrel especially at the chamber should get quite hot. It's just another spring to have replace to me. I very much like the POF design of not using one there and putting the return on the buffer spring alone which I mean to mainly use Tubb's chrome silicon buffer springs for which should last a very long time and won't have any heat put on them even though chrome silicon has a higher heat tolerance.


It is not a coincidence that these two rifles are "self regulating" whereas the others are not.  The spring serves a purpose.  
This feature allows the rifle to use only as much of the available gas as it needs to reliably cycle the weapon.  The excess gas bleeds off.
This won't matter to your typical weekend shooter.  In good conditions, there are no reliability issues with a quality AR.
This becomes an advantage though when you encounter variations in ammo.  Underpowered ammo, overpowered ammo; it doesn't matter (to an extent) because the piston self regulates.
What if fine sand gets into your receiver or you don't have the chance to clean for a long time?  The weapon will require a little more power to cycle correctly.  Self regulating piston takes care of that.
How 'bout SBR?  Shortening the barrel drastically changes the amount of pressure going through the gas port.  That is why SBR ARs are known to be finicky and require careful tuning.  Slap a self-regulating piston in there and your problem is solved.


As to your concern about the screws and spring wearing out.... forget it.  Other major components of your rifle (i.e. barrel, bolt) will wear out long before either of those parts.



The POF gas cylinder bleeds off the excess gas it doesn't need also through the vent holes you can see in the pic above on the bottom of the gas cylinder as the M14 does through it's vent hole. The LWRC while a nice system isn't Gods gift to piston rifles as far as I'm concerned. It's just a piston action and you either like or you don't, buy it or you don't.

As has been said before also, that many like to twist or just give misinformation about the POF piston.  While reversible the piston works either way in semi and is just designed to be able to slow the cyclic rate in fullauto on the POF's.

I like the LWRC's myself to a point but not more than POF's that I want one instead as I could have bought one and still can if I do. Regardless of what other guys give their opinion on though, it's still not alot more than just their opinion as is mine, but mine is still what I decide on as I know at all ends what I look at to form it and trust it to not be hyped and biased to myself.

No offense but I feel you guys don't really know much about the LWRC piston action springs life in actual testing data otherwise and I'd really like to here straight from someone at LWRC at this point just out of curiosity to know.
For me though I know in my own experience for my decision that springs do wearout, compress and take a set and can be effected by heat. Some materials just more than others.
I'd still like to know whether it's chrome silicon also or just regular music wire. The temper of both can be effected by the heat from the barrel with chrome silicon having a higher rate of tolerance to the heat and less compression set also.
Either way if you fire enough rounds through the rifle the barrel can get burning hot and the spring does sit right above it. I'm just taking that into account.
This is some of the same bickering though that I really don't like about these discussion at times and it takes alot of enjoyment out of them for me and seems to spread alot of misimformation as the internet is such an outlet for.

Link Posted: 12/11/2007 9:13:57 AM EST
[#42]
I dont know yet and cannot compare the 2 systems because I have not fired nearly enough rounds through the LWRC to even start comparing it to the POFs.
I do know that there are trade offs to having a return spring and not having one.
Yes , not having a return spring is good because of the wearing out issues. POF piston op system is very simple and robust. Great for a combat rifle. That being said, not having the return spring causes the POF's piston to slide freely back and forth when the bolt is locked back. Not a big deal but still noisy. The return spring as I stated in another post helps to reduce recoil.
Side by side the POF has more kick than the LWRC. Now there are ways around that. MGI's RRBuffer and 2x spring helped considerably on my POF carbine. With some tinkering I plan to try the same setup on my LWRC to help reduce the recoil even more. Ill find a good combination of spring and buffer that will still hold the bolt to the rear when shooting wolf ammo. Ill report on that at a later date.


No matter how you look at it, both systems serve the same purpose. Keeping the AR15 clean and cool which help in reliability. Thats the bottom line. They are just a different approach to the same goal. And both systems seem to achieve this.
If you want an extremely robust and simple system go with the POF.
If you want a tad more refined system that shoots a bit smoother go with the LWRC.

Just my 2 cents!
Link Posted: 12/11/2007 9:57:22 AM EST
[#43]

Quoted:
No offense but I feel you guys don't really know much about the LWRC piston action springs life in actual testing data otherwise and I'd really like to here straight from someone at LWRC at this point just out of curiosity to know.
For me though I know in my own experience for my decision that springs do wearout, compress and take a set and can be effected by heat. Some materials just more than others.
I'd still like to know whether it's chrome silicon also or just regular music wire. The temper of both can be effected by the heat from the barrel with chrome silicon having a higher rate of tolerance to the heat and less compression set also.
Either way if you fire enough rounds through the rifle the barrel can get burning hot and the spring does sit right above it. I'm just taking that into account.
This is some of the same bickering though that I really don't like about these discussion at times and it takes alot of enjoyment out of them for me and seems to spread alot of misimformation as the internet is such an outlet for.


I apologize if I come across as bickering.  I'm just trying to correct what I perceive as misinformation.
I've heard the spring issue come up before in piston gun discussions and I just don't believe it is an issue at all.

You are certainly correct that springs wear out and that they are affected by heat.
I have no first hand experience in failure testing the spring in either H&K or LWRC.
I don't know what the springs are made of, but was told by LWRC that it is "engineered" to last the life of the weapon.
They recommend replacing it when you rebarrel a weapon.  (it's a $3 part)
They report though, in their own destruction testing, that the piston sets (including the spring) are lasting through 3 or 4 barrels.

These are not the first weapons to use springs on their op-rods.  Look at the FAL for example.  
Springs are successfully used in high-heat environments all the time.  Vehicle engines for example: the valve lifters have springs.
If you design the spring correctly (which H&K and LWRC obviously did) you won't have a problem with it.  This is a non-issue.

ETA: I would be interested to hear from the manufacturer also.


Link Posted: 12/11/2007 11:50:58 AM EST
[#44]

Quoted:

Quoted:
No offense but I feel you guys don't really know much about the LWRC piston action springs life in actual testing data otherwise and I'd really like to here straight from someone at LWRC at this point just out of curiosity to know.
For me though I know in my own experience for my decision that springs do wearout, compress and take a set and can be effected by heat. Some materials just more than others.
I'd still like to know whether it's chrome silicon also or just regular music wire. The temper of both can be effected by the heat from the barrel with chrome silicon having a higher rate of tolerance to the heat and less compression set also.
Either way if you fire enough rounds through the rifle the barrel can get burning hot and the spring does sit right above it. I'm just taking that into account.
This is some of the same bickering though that I really don't like about these discussion at times and it takes alot of enjoyment out of them for me and seems to spread alot of misimformation as the internet is such an outlet for.


I apologize if I come across as bickering.  I'm just trying to correct what I perceive as misinformation.
I've heard the spring issue come up before in piston gun discussions and I just don't believe it is an issue at all.

You are certainly correct that springs wear out and that they are affected by heat.
I have no first hand experience in failure testing the spring in either H&K or LWRC.
I don't know what the springs are made of, but was told by LWRC that it is "engineered" to last the life of the weapon.
They recommend replacing it when you rebarrel a weapon.  (it's a $3 part)
They report though, in their own destruction testing, that the piston sets (including the spring) are lasting through 3 or 4 barrels.

These are not the first weapons to use springs on their op-rods.  Look at the FAL for example.  
Springs are successfully used in high-heat environments all the time.  Vehicle engines for example: the valve lifters have springs.
If you design the spring correctly (which H&K and LWRC obviously did) you won't have a problem with it.  This is a non-issue.

ETA: I would be interested to hear from the manufacturer also.




Changing it out at the barrel change sounds about right and just like the Fal and M14 you need to change there's out also. It's not like it's the end of world by far, and just my personal preference not to have it in the mix if I can have a choice on it which I do besides the other points of the POF's design I prefer.

The LWRC's are a very nice rifle from what I've seen from them don't get me wrong, as even though there not my first choice, I still feel there a great choice.
It's curious to know if they are chrome silicon as LWRC told you they were engineered to last the "life" of the rifle.
Chrome silicon springs are used in alot systems for there lasting longer, heat tolerance and consistent action with valve springs being one of them.

Tubb's says their chrome silicon springs will last the life of the rifle and other  info I found in study of the material in springs said 500,000 compressions also.
Even if they are though they still have a heat tolerance at a limited level whether high.

All's good though with us piston lovers regardless of any bickering thoughts aside. As we are all part of the same community and  this has been a pretty good discussion still.

I don't know if I agree with SRTM4 about the LWRC being the more refined system choice.
I'd prefer to look at them as just another good choice.
Link Posted: 12/11/2007 1:15:39 PM EST
[#45]
Achilles1, maybe I was going to far when I made that statement. Or maybe I didnt!
Just messing with you.
No matter what piston manufacture it is, its probably a step in the right direction.
Link Posted: 12/11/2007 2:24:20 PM EST
[#46]
Now I am going to have to buy each system to see which is best....

Link Posted: 12/11/2007 2:41:39 PM EST
[#47]

Quoted:
Achilles1, maybe I was going to far when I made that statement. Or maybe I didnt!
Just messing with you.
No matter what piston manufacture it is, its probably a step in the right direction.


Yes sir, either way it's a step in the right direction.
Link Posted: 12/11/2007 2:54:54 PM EST
[#48]
Guys, I have or have had all of the currently available AR piston systems out there. ARES, POF, LWRC, and HK (remember, LMT's isn't out yet, nor is Colt's).

I still have a LWRC M6A2 upper and the HK. I really like the LWRC, and thought it was the shiznit---until I got the HK. Don't get me wrong, I still like my LWRC. But that HK is built like a fucking Swiss watch!

The piston on the HK actually has a "suction" to it as you remove it. The gas blows out the front of the cylinder at an upward angle (away from the weapon). Where you have to (if you are a clean-nut like me) do a little cleaning around the rail system on the LWRC for the carbon, you don't have to on the HK. The rail system on the HK is sweet too---unscrew one screw and slide it forward and off the weapon. However, the HK is not a light upper by any means.

YMMV.
Link Posted: 12/11/2007 6:48:59 PM EST
[#49]
Link Posted: 12/11/2007 6:59:42 PM EST
[#50]
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