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Link Posted: 12/19/2015 4:59:01 PM EDT
[#1]
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Quoted:
Finished the M5 up last night.

-Aero Precisions M5 recievers, receiver extension, buffer spring, BCG, LPK
-Rainier Arms UltraMatch LR 16"
-SLR Sentry 8 adjustable GB
-Surefire SOCOM SF3P SR25
-Gunfighter Mod.3 CH
-Daniel Defense LITE 762
-KAC BUIS
-Geissele SSA-E
-LMT SOPMOD

Recevier extension, castle nut, and barrel coated in a custom mix of Norrell's Moly Resin to match muzzle device.

Receivers and rail Cerakoted in custom color "SOCOM Dark Earth"

http://i6.photobucket.com/albums/y229/akratz/ARFCOM/AR10/20151212_155416_zps5t4ck8dn.jpg
http://i6.photobucket.com/albums/y229/akratz/ARFCOM/AR10/20151212_155639_zpshsqhibbv.jpg
http://i6.photobucket.com/albums/y229/akratz/ARFCOM/AR10/20151212_155710_zpszcysykxg.jpg
http://i6.photobucket.com/albums/y229/akratz/ARFCOM/AR10/20151212_155731_zpsevlczfw1.jpg
http://i6.photobucket.com/albums/y229/akratz/ARFCOM/AR10/20151212_160106_zpshjilrcvr.jpg
http://i6.photobucket.com/albums/y229/akratz/ARFCOM/AR10/20151212_160134_zpsrdpbg9tq.jpg
View Quote


Where did you find that DD rail?
Link Posted: 12/19/2015 9:00:43 PM EDT
[#2]
ARFCOM EE
Link Posted: 12/20/2015 12:26:32 PM EDT
[#3]
How did you guys install the front pivot spring and detent? I can't get the pin in without having the detent pop out.
Link Posted: 12/20/2015 2:17:55 PM EDT
[#4]
Well it is a start.



Link Posted: 12/20/2015 3:46:40 PM EDT
[#5]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
How did you guys install the front pivot spring and detent? I can't get the pin in without having the detent pop out.
View Quote


I hold the detent down from the inside with a thick,  1/4" punch or similar. The take down pin can hold half the detent while your tool holds the other half. Pull out the tool real fast while pushing in the pin.

Boom
Link Posted: 12/20/2015 3:55:53 PM EDT
[#6]
My shipping notice on FedEx still says initiated for the barrel.  Did get my reciever set two weeks ago.
Link Posted: 12/20/2015 7:04:01 PM EDT
[#7]
My Black Friday upper/lower set should be delivered on the 22nd! Time for another build!
Link Posted: 12/21/2015 4:20:40 PM EDT
[#8]
Range report #3

40 rounds Hornady 110gr TAP 100% function, fired in 5-round sets, BHO 100%. Brass looks good, most cases have no swipes.
Link Posted: 12/21/2015 6:29:33 PM EDT
[#9]
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Quoted:
Range report #3

40 rounds Hornady 110gr TAP 100% function, fired in 5-round sets, BHO 100%. Brass looks good, most cases have no swipes.
View Quote


were you pushing the speed? or just slow-bench firing?
Link Posted: 12/21/2015 9:39:00 PM EDT
[#10]
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Quoted:


were you pushing the speed? or just slow-bench firing?
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Quoted:
Quoted:
Range report #3

40 rounds Hornady 110gr TAP 100% function, fired in 5-round sets, BHO 100%. Brass looks good, most cases have no swipes.


were you pushing the speed? or just slow-bench firing?


Some shooting was as fast as sights were back on target... but no crazy "as fast as I can pull the trigger" shooting yet.
Link Posted: 12/24/2015 3:54:20 AM EDT
[#11]








KAC Stoner mag worked flawlessly.

Link Posted: 12/24/2015 6:16:14 AM EDT
[#12]
Link Posted: 12/25/2015 9:47:47 PM EDT
[#13]
Gorgeous builds in this thread.
I'm gathering parts and almost finished with mine. Down to BCG. I'm looking at Aim's NiB BCG or the one from KAK. Would like a coated one because it'll see a suppressor.  Any opinions on either of these or recommendations from you guys?
Link Posted: 12/25/2015 10:14:42 PM EDT
[#14]
I could use some advice on a gas block, tube, flash hider and maybe a stock. I am planning on going with a Aero rail. I saw the .750 gas block but it isn't adjustable,
Link Posted: 12/25/2015 10:45:04 PM EDT
[#15]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
I could use some advice on a gas block, tube, flash hider and maybe a stock. I am planning on going with a Aero rail. I saw the .750 gas block but it isn't adjustable,
View Quote


Im going to try one of the BTE gas blocks.
Link Posted: 12/25/2015 10:48:12 PM EDT
[#16]

Discussion ForumsJump to Quoted PostQuote History
Quoted:


I could use some advice on a gas block, tube, flash hider and maybe a stock. I am planning on going with a Aero rail. I saw the .750 gas block but it isn't adjustable,
View Quote




 
This is what I'm going with




BA 18" rifle length barrel

SLR Sentry 7 clamp on

any rifle length gas block

Griffin Armament muzzle break or flash hider (taper mount) for my F1 can

Magpul fixed carbine stock
Link Posted: 12/25/2015 10:54:03 PM EDT
[#17]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

  This is what I'm going with


BA 18" rifle length barrel
SLR Sentry 7 clamp on
any rifle length gas block
Griffin Armament muzzle break or flash hider (taper mount) for my F1 can
Magpul fixed carbine stock
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Quoted:
Quoted:
I could use some advice on a gas block, tube, flash hider and maybe a stock. I am planning on going with a Aero rail. I saw the .750 gas block but it isn't adjustable,

  This is what I'm going with


BA 18" rifle length barrel
SLR Sentry 7 clamp on
any rifle length gas block
Griffin Armament muzzle break or flash hider (taper mount) for my F1 can
Magpul fixed carbine stock



I am planning on going with the PWS FSC30 and I am trying to find pics to see what I like for stocks but a lot of people seem to be using adjustables and mot a lot of fixed. Is the SLR 7 good with a BA barrel?
Link Posted: 12/25/2015 11:44:13 PM EDT
[#18]
Well they have different diameter ones for whatever barrel you end up with. The Sentry 7 fits .750" barrels.



I wanted a fixed for my build, but should I change my mind the FCS fits on a carbine buffer tube so it is easy for me to switch to a collapsible stock.
Link Posted: 12/25/2015 11:48:41 PM EDT
[#19]
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Quoted:



let me know how those Brownells mags do
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Quoted:
Quoted:
16 months in the making. I still have a long way to go to get it where I want it (bipod, scope, mount, maybe even a suppressor) but at least I finally have a functioning rifle.

Last August
<a href="http://s762.photobucket.com/user/ratjaw/media/308%20AR/image_zpsrdgzzjap.jpeg.html" target="_blank">http://i762.photobucket.com/albums/xx270/ratjaw/308%20AR/image_zpsrdgzzjap.jpeg</a>

Lots of parts collecting, mostly waiting for and jumping on sales
<a href="http://s762.photobucket.com/user/ratjaw/media/308%20AR/image_zpsde73dfpx.jpeg.html" target="_blank">http://i762.photobucket.com/albums/xx270/ratjaw/308%20AR/image_zpsde73dfpx.jpeg</a>

And finally a complete rifle
<a href="http://s762.photobucket.com/user/ratjaw/media/308%20AR/image_zps7wnkxw6b.jpeg.html" target="_blank">http://i762.photobucket.com/albums/xx270/ratjaw/308%20AR/image_zps7wnkxw6b.jpeg</a>

Aero receiver set, Rainier select 18", AP BCG and CH (plan to upgrade to a BCM 7.62 Gunfighter large latch), SLR 16" Solo hand guard, A2 stock with DPMS 308 rifle buffer and spring, 5 Brownells mags. Still waiting on my Surefire flash hider that's on back order, so I went with an AP bird cage while I wait. Can't wait to get to the range and try it out.



let me know how those Brownells mags do


Got to put 10 rounds through it yesterday to function check. I can shoot in my back yard but I don't have anything more than a makeshift pistol range so I couldn't test for accuracy at any real distance.

The performance of the Brownells mag was...difficult to gauge. I started by loading a single round. Pulled the charging handle all the way back and let it fly. Took aim and got a "click." Turns out the mag didn't feed the round. Tried again and success feeding but it didn't lock the bolt back. Next I loaded two rounds. Both fed properly and the bolt locked back on the empty mag. Then it was three rounds which all fed and functioned correctly followed by another three that fed and functioned correctly. Finally a single round that fed and locked the bolt back. Based on that I had a single Brownells 20 round magizine function 9 out of 10 rounds. Maybe it was a break in kind of thing, maybe there's a problem that is still lurking. Definitely need more test and evaluation time at the range.

On a good note I believe I've built a real shooter. I was shooting off hand at about 10 yards but the group was very tight, even though my objective was testing the function of the build and not really even trying to test accuracy. It was enough to give me high hopes for accuracy at real rifle distances. Hopefully next weekend I can get to the gun club and give it a proper workout.
Link Posted: 12/26/2015 12:06:23 AM EDT
[#20]
Also finally got my backordered Surefire 3P Eliminator flash hider. I was planning on a Vortex but they tend to be $80+ for the .308 size. Surefire Black Friday sale got this one to my door for ~$37 after shipping. It seems to be very high quality. Has a tuning fork effect when struck: this one is E flat .

Link Posted: 12/26/2015 4:02:24 AM EDT
[#21]
Finished my 308 build on Christmas eve Sure was a fun project!
Waiting on a Vortex Diamondback HP 3-12x42
AP M5 stripped upper (Brownells)
AP BCG (Schuyler Arms)
Schuyler/BA BF barrel
Adjustable Gas block/midlength tube (Wilson Combat)
12.5 keymod rail (Odin Works)
RAC Compensator (Rainier Arms)
BCM Mod4 Gunfighter CH (Red Barn Armory)
JMT 80% poly lower (JMT)
DPMS lpk (Riflegear)
6 pos milspec stock (Riflegear)
CMMG 308 buffer and spring (Riflegear)
Magpul ACS-L OD stock (Riflegear)
Magpul MOE+ grip (Riflegear)
JP Reduced power spring set (Riflegear)
Phase5 ebrv2-308 (Red Barn Armory)


Link Posted: 12/26/2015 10:44:15 AM EDT
[#22]
Go to the hardware store and buy a clevis pin. Use that to help hold and line things up

Discussion ForumsJump to Quoted PostQuote History
Quoted:
How did you guys install the front pivot spring and detent? I can't get the pin in without having the detent pop out.
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Link Posted: 12/26/2015 12:18:03 PM EDT
[#23]
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Quoted:
Go to the hardware store and buy a clevis pin. Use that to help hold and line things up


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Quoted:
Go to the hardware store and buy a clevis pin. Use that to help hold and line things up

Quoted:
How did you guys install the front pivot spring and detent? I can't get the pin in without having the detent pop out.



I did that once and I also took the detent in needle-nose pliers and pressed it down with a Flathead and then push an allen key over it.
Link Posted: 12/27/2015 1:07:31 PM EDT
[#24]
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Quoted:
I could use some advice on a gas block, tube, flash hider and maybe a stock. I am planning on going with a Aero rail. I saw the .750 gas block but it isn't adjustable,
View Quote



I like the Fortis gas block and the Magpul PRS
Link Posted: 12/27/2015 9:24:05 PM EDT
[#25]
Odin Works or Syrac adjustable gas block. You might not NEED it, but it will definitely make your machine run more efficient and reduce uneeded wear and tear. Stock is totally personal preference.

Discussion ForumsJump to Quoted PostQuote History
Quoted:



I like the Fortis gas block and the Magpul PRS
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Quoted:
Quoted:
I could use some advice on a gas block, tube, flash hider and maybe a stock. I am planning on going with a Aero rail. I saw the .750 gas block but it isn't adjustable,



I like the Fortis gas block and the Magpul PRS

Link Posted: 12/28/2015 4:10:11 PM EDT
[#26]

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Quoted:


Go to the hardware store and buy a clevis pin. Use that to help hold and line things up






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Discussion ForumsJump to Quoted PostQuote History
Quoted:


Go to the hardware store and buy a clevis pin. Use that to help hold and line things up




Quoted:

How did you guys install the front pivot spring and detent? I can't get the pin in without having the detent pop out.




I used an allen wrench and pushed it down. Worked great.



 
Link Posted: 12/28/2015 6:44:49 PM EDT
[#27]
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Quoted:
How did you guys install the front pivot spring and detent? I can't get the pin in without having the detent pop out.
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This right here.  http://www.ar15.com/forums/t_3_4/362116_How_to_install_the_front_Pivot_Pin_using_a__1_clevis_pin___56k_death.html
Link Posted: 12/29/2015 12:08:44 AM EDT
[#28]
Schuyler has an awesome deal on an 18" rifle length gas M5E1 upper (MLOCK 15" rail) no BCG/CH for $475 ($482 after you factor in their $7 shipping charge.)



I was very very tempted, and almost ordered it tonight since it's almost exactly what I want...but I decided I want to get the satisfaction from building my upper exactly the way I want it without having any spare parts lying around (lo pro gas block, A2 FH, and a complete M5 upper receiver) tempting me to build another.
Link Posted: 12/29/2015 1:11:21 PM EDT
[#29]


This is that upper that schuyler is selling. Mine came today.

My M5 builder set and barrel was replaced with this and a lower when it went missing somewhere between the Shuyler mail room and the fedex depot. I'll still have to disassemble it for the adjustable gas block. More work, but at least I have my parts.

As such -
Lower / upper $525 ish
MOE FDE grip - $12
UBR- $199
Larue MBT - $125
Seekins Mag release $5
Still need-
Buffer / spring - (Not sure what I'll buy)
BTE Adj gas block - $45
BTE Charging handle - $50
Bcg (KAK? Not sure)

Est total cost for M5E1 MLOK with UBR and LaRue MBT-  Approx $1200 including shipping and transfer fees on the lower.

I also have a set of troy HK style sights in FDE i will probably put on it.

May or may not paint barrel FDE or black. Not sure yet.

Aero LPK minus grip/fcg - $45
Link Posted: 12/29/2015 1:41:59 PM EDT
[#30]
soon.

Link Posted: 12/29/2015 4:55:17 PM EDT
[#31]




Discussion ForumsJump to Quoted PostQuote History
Quoted:





https://scontent.forf1-2.fna.fbcdn.net/hphotos-xpf1/v/t1.0-9/7390_1119805971377723_7420041834933324383_n.jpg?oh=acf5da5407fb054b141c60ac8c5d03be&oe=571786A4
This is that upper that schuyler is selling. Mine came today.
My M5 builder set and barrel was replaced with this and a lower when it went missing somewhere between the Shuyler mail room and the fedex depot. I'll still have to disassemble it for the adjustable gas block. More work, but at least I have my parts.
As such -




Lower / upper $525 ish




MOE FDE grip - $12




UBR- $199




Larue MBT - $125




Seekins Mag release $5




Still need-




Buffer / spring - (Not sure what I'll buy)




BTE Adj gas block - $45




BTE Charging handle - $50




Bcg (KAK? Not sure)
Est total cost for M5E1 MLOK with UBR and LaRue MBT-  Approx $1200 including shipping and transfer fees on the lower.
I also have a set of troy HK style sights in FDE i will probably put on it.
May or may not paint barrel FDE or black. Not sure yet.
Aero LPK minus grip/fcg - $45
View Quote







 









Do the M5 FDE lower receivers come with the upper/lower tension screw, like the anodized black ones do?








 
Link Posted: 12/29/2015 8:00:59 PM EDT
[#32]
How long your upper/lower staking to ship ordered mine 12/23
Link Posted: 12/29/2015 8:02:43 PM EDT
[#33]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

 

Do the M5 FDE lower receivers come with the upper/lower tension screw, like the anodized black ones do?


 
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Quoted:
Quoted:
https://scontent.forf1-2.fna.fbcdn.net/hphotos-xpf1/v/t1.0-9/7390_1119805971377723_7420041834933324383_n.jpg?oh=acf5da5407fb054b141c60ac8c5d03be&oe=571786A4

This is that upper that schuyler is selling. Mine came today.

My M5 builder set and barrel was replaced with this and a lower when it went missing somewhere between the Shuyler mail room and the fedex depot. I'll still have to disassemble it for the adjustable gas block. More work, but at least I have my parts.

As such -
Lower / upper $525 ish
MOE FDE grip - $12
UBR- $199
Larue MBT - $125
Seekins Mag release $5
Still need-
Buffer / spring - (Not sure what I'll buy)
BTE Adj gas block - $45
BTE Charging handle - $50
Bcg (KAK? Not sure)

Est total cost for M5E1 MLOK with UBR and LaRue MBT-  Approx $1200 including shipping and transfer fees on the lower.

I also have a set of troy HK style sights in FDE i will probably put on it.

May or may not paint barrel FDE or black. Not sure yet.

Aero LPK minus grip/fcg - $45

 

Do the M5 FDE lower receivers come with the upper/lower tension screw, like the anodized black ones do?


 


Should. My black one didn't but a buddy of mine bought a FDE and it had the tension screw. The upper Aero sent to replace the SHIT cerakote on his first one fit so well into the lower he doesn't use the screw anymore.
Link Posted: 12/29/2015 8:12:13 PM EDT
[#34]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
https://scontent.forf1-2.fna.fbcdn.net/hphotos-xpf1/v/t1.0-9/7390_1119805971377723_7420041834933324383_n.jpg?oh=acf5da5407fb054b141c60ac8c5d03be&oe=571786A4

This is that upper that schuyler is selling. Mine came today.

My M5 builder set and barrel was replaced with this and a lower when it went missing somewhere between the Shuyler mail room and the fedex depot. I'll still have to disassemble it for the adjustable gas block. More work, but at least I have my parts.

As such -
Lower / upper $525 ish
MOE FDE grip - $12
UBR- $199
Larue MBT - $125
Seekins Mag release $5
Still need-
Buffer / spring - (Not sure what I'll buy)
BTE Adj gas block - $45
BTE Charging handle - $50
Bcg (KAK? Not sure)

Est total cost for M5E1 MLOK with UBR and LaRue MBT-  Approx $1200 including shipping and transfer fees on the lower.

I also have a set of troy HK style sights in FDE i will probably put on it.

May or may not paint barrel FDE or black. Not sure yet.

Aero LPK minus grip/fcg - $45
View Quote


How do you like the Gas block?
Link Posted: 12/29/2015 8:20:27 PM EDT
[#35]

Discussion ForumsJump to Quoted PostQuote History
Quoted:
Should. My black one didn't but a buddy of mine bought a FDE and it had the tension screw. The upper Aero sent to replace the SHIT cerakote on his first one fit so well into the lower he doesn't use the screw anymore.

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Quoted:



Quoted:


Quoted:

https://scontent.forf1-2.fna.fbcdn.net/hphotos-xpf1/v/t1.0-9/7390_1119805971377723_7420041834933324383_n.jpg?oh=acf5da5407fb054b141c60ac8c5d03be&oe=571786A4



This is that upper that schuyler is selling. Mine came today.



My M5 builder set and barrel was replaced with this and a lower when it went missing somewhere between the Shuyler mail room and the fedex depot. I'll still have to disassemble it for the adjustable gas block. More work, but at least I have my parts.



As such -

Lower / upper $525 ish

MOE FDE grip - $12

UBR- $199

Larue MBT - $125

Seekins Mag release $5

Still need-

Buffer / spring - (Not sure what I'll buy)

BTE Adj gas block - $45

BTE Charging handle - $50

Bcg (KAK? Not sure)



Est total cost for M5E1 MLOK with UBR and LaRue MBT-  Approx $1200 including shipping and transfer fees on the lower.



I also have a set of troy HK style sights in FDE i will probably put on it.



May or may not paint barrel FDE or black. Not sure yet.



Aero LPK minus grip/fcg - $45


 



Do the M5 FDE lower receivers come with the upper/lower tension screw, like the anodized black ones do?





 




Should. My black one didn't but a buddy of mine bought a FDE and it had the tension screw. The upper Aero sent to replace the SHIT cerakote on his first one fit so well into the lower he doesn't use the screw anymore.





 



Nice, thanks for the reply.
Link Posted: 12/29/2015 10:28:11 PM EDT
[#36]
I've had my FDE lower order for about 2 weeks.  Just got the shipping notice this morning and now I'm looking at their uppers.

This stuff is expensive, I will have to save for the BCG and raptor charging handle and everything else to make it a worthy shooter.

ETA: got a 18" FDE upper.  Now I'm out of money and officially will have no room to store it unless I sell a few other rifles.  Only the 4th rifle bought in the last 30 days.

Also this will be my first AR10.
Link Posted: 12/29/2015 11:51:56 PM EDT
[#37]
I just got my blem lower and new upper today from my dealer. I can't believe they sold this as a blem! There's just a tiny little scuff right behind the mag release, almost looks like a pencil mark. Whatever though, saved myself a few dollars, and it will be cerakoted anyway. Already have a BA 20" bbl sitting here, now I just need to get everything else. Soon...
Link Posted: 12/31/2015 3:03:09 AM EDT
[#38]
First time out, not working so great.

Build:
Aero M5 Upper/Lower/LPK
AR-15 Midlength gas tube
BA 16" Mid length barrel
Aero M5 buffer tube/weight/spring
AIM Surp BCG Nitrided

Extracted/ejected some of the time, never fed. Enough to reset the trigger every time. It was sometimes ridiculously difficult to cycle the action via the charging handle.

I'm going to take a peak at the chamber for burrs, and try to see how the bcg/gas tube length fits up. Any other suggestions?
Link Posted: 12/31/2015 3:41:40 AM EDT
[#39]
just wondering, did you check headspace?  only reason i'm asking, is i'm doing a similar build, had 2 barrels from different mfrs, and headspace didn't check with neither of them (they're both very reputable).  i had bought a Clymer 308Win HS GO gage, and tried both barrels with 3 different bolts (removed ejectors), no joy, bolt won't rotate into battery, didn't want to pound on it.  since the firing pin was out, also tried a cartridge, and it wouldn't seat, so that's that story.

also, how freely does the bolt move in the carrier bore, does it slide in/out, or do you have to use the fwd assist to help it seat?  just wondering.  also, you didn't mention which mags?
Link Posted: 12/31/2015 10:26:31 AM EDT
[#40]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
First time out, not working so great.

Build:
Aero M5 Upper/Lower/LPK
AR-15 Midlength gas tube
BA 16" Mid length barrel
Aero M5 buffer tube/weight/spring
AIM Surp BCG Nitrided

Extracted/ejected some of the time, never fed. Enough to reset the trigger every time. It was sometimes ridiculously difficult to cycle the action via the charging handle.

I'm going to take a peak at the chamber for burrs, and try to see how the bcg/gas tube length fits up. Any other suggestions?
View Quote


Mine is like this.
Without a cartridge, the BCG seats nicely with very little spring pressure (you can drop it from 1-2" out). With a cartridge, difficult to hand-cycle and doesn't want to go into battery... resulting in about 20% failure rate for feeding completely.
The bullets themselves are getting scraped up from hand cycling and getting some very light linear marks on the brass, running parallel.
Once in battery, it fires fine.
Mine is with a Mega barrel and AIM NiB BCG.
Link Posted: 12/31/2015 10:54:47 AM EDT
[#41]
My Aero bolt catch sheared off yesterday. They're sending me a replacement no questions asked, but I'm going to be on the lookout for a sturdier part.


Does anyone know of a better/stronger bolt catch that will fit the M5 receiver?
Link Posted: 12/31/2015 4:55:21 PM EDT
[#42]
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Quoted:
just wondering, did you check headspace?  only reason i'm asking, is i'm doing a similar build, had 2 barrels from different mfrs, and headspace didn't check with neither of them (they're both very reputable).  i had bought a Clymer 308Win HS GO gage, and tried both barrels with 3 different bolts (removed ejectors), no joy, bolt won't rotate into battery, didn't want to pound on it.  since the firing pin was out, also tried a cartridge, and it wouldn't seat, so that's that story.

also, how freely does the bolt move in the carrier bore, does it slide in/out, or do you have to use the fwd assist to help it seat?  just wondering.  also, you didn't mention which mags?
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Quoted:
just wondering, did you check headspace?  only reason i'm asking, is i'm doing a similar build, had 2 barrels from different mfrs, and headspace didn't check with neither of them (they're both very reputable).  i had bought a Clymer 308Win HS GO gage, and tried both barrels with 3 different bolts (removed ejectors), no joy, bolt won't rotate into battery, didn't want to pound on it.  since the firing pin was out, also tried a cartridge, and it wouldn't seat, so that's that story.

also, how freely does the bolt move in the carrier bore, does it slide in/out, or do you have to use the fwd assist to help it seat?  just wondering.  also, you didn't mention which mags?


In order:
-No, I did not check headspace. I will try putting a round in and seeing if I can put the bolt (without firing pin or carrier) and report back.
-The bolt will close on an empty chamber if I drop it ~1" off or so
-The forward assist does not engage the BCG it appears
-I am using gen 3 25rd Pmags

Quoted:

Mine is like this.
Without a cartridge, the BCG seats nicely with very little spring pressure (you can drop it from 1-2" out). With a cartridge, difficult to hand-cycle and doesn't want to go into battery... resulting in about 20% failure rate for feeding completely.
The bullets themselves are getting scraped up from hand cycling and getting some very light linear marks on the brass, running parallel.
Once in battery, it fires fine.
Mine is with a Mega barrel and AIM NiB BCG.


I'm not sure exactly what to do with mine.

Here is the gas tube length and approximate sitting location of the BCG


I did find it odd that the way the hole in the cam pin was drilled allowed for the pin to be removed without clocking it. Seems like they should have had it 90 degrees rotated?
Link Posted: 12/31/2015 7:26:39 PM EDT
[#43]
Can anybody help with this?

black rain "large frame" pivot
KNS .308 pivot


KNS .308 take down pin

Will these work in an aero M5 .308 receiver?
Link Posted: 12/31/2015 11:28:38 PM EDT
[#44]
+Beneviolence:  if your fwd assist isn't engaging your BCG, assuming your BCG has the fwd assist serrations, then your fwd assist might be out of spec.  i had that issue with the fwd assist that came with my Aero M5 upper.  swapped the FA out with a spare from my AR15/M4 stash, and it works fine now.  of course, that doesn't solve an apparent bolt headspace issue.  side-by-side, you could see that the pawl didn't tilt over as far.
Link Posted: 1/1/2016 4:55:28 PM EDT
[#45]
I tried working the action without a loaded mag in, this would see if the symptoms of the problem were something other than related to resistance from the carrier dragging across a loaded mag that is sitting too high (receivers out of spec).

1. On an empty chamber, my bolt will slide home with zero force.
2. With an unfired round in the chamber, it has to be dropped from a full pull for the BCG to go into battery.
3. Extracting an unfired round is very difficult, with or without a magazine in (as in bracing the but against my hip)

Sounds like what this guy was having: link
guess the finger pointing is now to AIM's BCG
Link Posted: 1/1/2016 9:19:27 PM EDT
[#46]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
I tried working the action without a loaded mag in, this would see if the symptoms of the problem were something other than related to resistance from the carrier dragging across a loaded mag that is sitting too high (receivers out of spec).

1. On an empty chamber, my bolt will slide home with zero force.
2. With an unfired round in the chamber, it has to be dropped from a full pull for the BCG to go into battery.
3. Extracting an unfired round is very difficult, with or without a magazine in (as in bracing the but against my hip)

Sounds like what this guy was having: link
guess the finger pointing is now to AIM's BCG
View Quote


This is why when I finally dove into the AR10 building game I decided to keep the upper/lower/BCG/and LPK all from the same maker.
Link Posted: 1/1/2016 10:16:41 PM EDT
[#47]
Discussion ForumsJump to Quoted PostQuote History
Quoted:


This is why when I finally dove into the AR10 building game I decided to keep the upper/lower/BCG/and LPK all from the same maker.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
I tried working the action without a loaded mag in, this would see if the symptoms of the problem were something other than related to resistance from the carrier dragging across a loaded mag that is sitting too high (receivers out of spec).

1. On an empty chamber, my bolt will slide home with zero force.
2. With an unfired round in the chamber, it has to be dropped from a full pull for the BCG to go into battery.
3. Extracting an unfired round is very difficult, with or without a magazine in (as in bracing the but against my hip)

Sounds like what this guy was having: link
guess the finger pointing is now to AIM's BCG


This is why when I finally dove into the AR10 building game I decided to keep the upper/lower/BCG/and LPK all from the same maker.


I thought I was pretty much doing that. I was going off what everyone else said was compatible from their experience. Hell, someone even relayed the info that AIM's BCG and Aero's are both made by Toolcraft. If that held true, all of those parts (outside of the FCG and mag button are Aero's/made for Aero)
Link Posted: 1/2/2016 2:17:42 AM EDT
[#48]
Discussion ForumsJump to Quoted PostQuote History
Quoted:


I thought I was pretty much doing that. I was going off what everyone else said was compatible from their experience. Hell, someone even relayed the info that AIM's BCG and Aero's are both made by Toolcraft. If that held true, all of those parts (outside of the FCG and mag button are Aero's/made for Aero)
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
Quoted:
I tried working the action without a loaded mag in, this would see if the symptoms of the problem were something other than related to resistance from the carrier dragging across a loaded mag that is sitting too high (receivers out of spec).

1. On an empty chamber, my bolt will slide home with zero force.
2. With an unfired round in the chamber, it has to be dropped from a full pull for the BCG to go into battery.
3. Extracting an unfired round is very difficult, with or without a magazine in (as in bracing the but against my hip)

Sounds like what this guy was having: link
guess the finger pointing is now to AIM's BCG


This is why when I finally dove into the AR10 building game I decided to keep the upper/lower/BCG/and LPK all from the same maker.


I thought I was pretty much doing that. I was going off what everyone else said was compatible from their experience. Hell, someone even relayed the info that AIM's BCG and Aero's are both made by Toolcraft. If that held true, all of those parts (outside of the FCG and mag button are Aero's/made for Aero)


Never mind me... I honestly have no idea if that's true or not. I hope you get it figured out. I will have all the parts to build my second M5 by the end of this next  week... I hope I enjoy the same success as with my first build.
Link Posted: 1/4/2016 12:41:04 AM EDT
[#49]
Anyone know if Griffin Armaments SNACH ambi charging handle works ok in the M5?
Link Posted: 1/5/2016 3:44:13 PM EDT
[#50]
Guys, do any of you have some pics/reports on the accuracy out of the 16in SS barrels with match grade ammunition? Hard pressed to find more than a couple examples AND they are with plinking ammo only.  Would love to see THE BEST these barrels can do if possible.  Trying to keep the build all Aero!

Thanks
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