308 AR10 Build Info/Picture Thread

[Billiam1211]

This is my first attempt at building a PRS gas gun. I'm going to be testing it out in a few weeks at the Racine County Line Sniper Challenge. It's a 308 or 223 only match that will go out to 700 yards. I'm going to run my 41.8gr IMR 4064 / 175gr SMK load. It gets me 2652 fps with a SD of 10. This rifle is a pig at about 18lbs and I've never taken it past 300 yards, hope it does well.

Aero Precision M5 Enhanced Lower
Aero Precision M5 standard Upper
***I went with the standard upper so I could lap the receiver face
15-Inch Aero M5 enhanced M-lok handguard
Magpul PRS Gen III
Larue MBT-2s Trigger
Criterion 24 Inch Bull Barrel by Fulton Armory
Toolcraft NiB BCG
American Precision Arms Little Bastard Gen II
Vortex Viper PST Gen II 5-25x
Tactical Brass Recovery Brass Catcher

 

[remington patriot]

Aero Precision upper/lower. Magpul UBR, Proof Research stainless 18" with 419 Hellfire break. Geissele SSA-E, Vortex Viper PST gen 2.

 

[SharpsNitro]

Here is mine. It’s a Mega MATEN Ambi set with:

Criterion 16” hybrid contour barrel, 1-10” twist
PRI carbon fiber handguard
XLR stock
JP full mass carrier with SCS and HP bolt
Geissele DMR trigger
Kahles K312 scope in an ARC 20moa mount
OSS BPR1 suppressor
B&T monopod and Harris up front

The upper and lower I Cerakoted in a Kryptek Typhon like pattern.

 

[opus56]

Haven't had my .308 out for a few months because of some scope swapping between other rifles. But I was able to get a scope mounted last night and took it out this morning for a quick zero. Man, I love this thing.

 

[ACGuns]

Aero m5, Bartlein 1-8 in 243 cut in house @19”. TBAC ultra 7 and some other bits and pieces.

 

[ACGuns]

Another m5 but my buddy needs more glass. 20”6.5cm Douglas bbl cut in house, XLR stock

 

[MSTN]

New 6.5 Creedmoor big block gasser! Built around a 20" Proof CFW barrel with +2 CAMGAS system. The Battle Arms 7.62 receiver set with matching handguard create a solid home for this lightweight, precision barrel. Since it's a 6.5 CM, I'm using a FMOS JP bolt carrier group with high pressure bolt, SLR adjustable gas block, H3 buffer, and Heavy Buffers recoil spring. All the small parts are V Seven titanium, as is the Fusion brake. Larue MBT breaks at 3.5 LB.

Weight? 7 LB 15.5 OZ. dry.

Can't wait to shoot it!

 

[MSTN]

Getting closer!

Added Nightforce ATACR F1 4-16x50 in Spuhr SP-4026 mount.

 

[whammy]

Built my first AR10. Below are the specs:

Lower:

• M5 Lower, Parts Kit, Carbine Buffer Tube
• Geissele SSA-E Trigger
• MOE Grip
• Battle Arms Ambi Safety
• Battlelink Minimalist Stock & Cobra Weave Paracord
• Spike Tactical Billet Mag Catch Button

Upper:

• M5 Upper w/ Black Nitride BCG
• Aero 18" CMV Barrel & 15" keymod handguard
• Spike Tactical / Superlative Arms Adj. Gas Block
• Procomp 762 Muzzle Brake
• Radian Raptor Ambi Charging Handle
• Magpul Sights (for now; need to research optics)

Price: ~1400
Weight ~9lbs

 

[opus56]

Got my Sandman S...can't wait to give it a go!

 

[Jefe's Dope]

Got my Sandman S...can't wait to give it a go!

View attachment 7030285

I'm at 13 months waiting on my TBAC Ultra 7. ?

 

[_Windrider_]

I'm at 13 months waiting on my TBAC Ultra 7. ?

Jesus. That sucks.

 

[Hobbes442]

New 6.5 Creedmoor big block gasser! Built around a 20" Proof CFW barrel with +2 CAMGAS system. The Battle Arms 7.62 receiver set with matching handguard create a solid home for this lightweight, precision barrel. Since it's a 6.5 CM, I'm using a FMOS JP bolt carrier group with high pressure bolt, SLR adjustable gas block, H3 buffer, and Heavy Buffers recoil spring. All the small parts are V Seven titanium, as is the Fusion brake. Larue MBT breaks at 3.5 LB.

Weight? 7 LB 15.5 OZ. dry.
View attachment 7022162View attachment 7022163View attachment 7022164View attachment 7022165View attachment 7022166View attachment 7022167
Can't wait to shoot it!

What length handguard? I like the fact you can take adjustable gas block off without removing handguard

 

[MSTN]

14" Battle Arms Development

 

[WoobieJ]

I am impressed with Aero Precision’s work! Really nice fit and finish. Built an Aero Precision M5 for a buddy. Next step is to mount the scope and to take it to the range.

Specs:
Aero Precision M5 Builder’s kit w/ 15” Keymod in FDE
Aero Precision BCG
Aero Precision standard charging handle
Rainier Arms 18” Match 6.5 Creedmoor barrel Rainier Arms 0.800” Low profile gas block
Rainier Arms rifle length tube
Aero Precision LPK
Larue MBT trigger
Magpul MOE Grip
Magpul CTR stock
Standard .308 Carbine spring, standard .308 carbine buffer & backup Spring Co Orange Buffer spring, KAK heavy .308 carbine buffer (we’ll see which functions better)
Aero Precision 30mm scope mount
Trijicon Accupower 4-16x50 MOA (on the way)

I’ll post an update on function and accuracy as well in the near future.

 

[matt020285]

Areo Precision 18” ballistic advantage. Half MOA all day

 

[ShooterwithNoName]

I figured I would throw in my newest big block build. I built it to basically serve as a 308 battle rifle/DMR. I am building a 16" chrome moly barreled upper for chewing through milsurp ammo. This upper I just completed for it, is the DMR upper. Since I built it with some parts sourced from here on the hide, I figured it only right I throw a couple cell phone pics up of it.

Here goes the build list, nothing fancy, but definitely functional. The weather is supposed to break this weekend so maybe I can add some groups this weekend.

• Stag 10 Upper/Lower Set
• Seekins SP10 18" Barrel and Brake
• Troy 15" Carbon Fiber Mlok Rail
• Seekins Adjustable Gas Block
• Intermediate Gas System
• Toolcraft Bolt Carrier
• JP Enhanced Bolt
• KAC Charging Handle
• KAK Heavy Carbine Buffer/Spring
• CMMG 2 Stage Trigger
• Aero M5 LPK, A2 Grip
• HK Stock (Placeholder for SOPMOD)

Also its wearing a Burris AR332, also a placeholder for a decent mil 2-10x scope. The 16" upper will wear the Burris until I can afford an ACOG...

 

[FF05]

My PWS Mk220 with Kahles K16i

 

[Chris777]

Spikes tactical upper and lower
Criterion 24” match bull barrel in 308
JP MK III Hans guard
JP recoil eliminator
Fail Zero trigger and hammer
JP reliability springs
Magpul stock
Harris bipod
Magpul monopod
JP adjustable gas block
JP lightweight stainless steel BCG
Primary arms scope

 

[Billiam1211]

Spikes tactical upper and lower
Criterion 24” match bull barrel in 308
JP MK III Hans guard
JP recoil eliminator
Fail Zero trigger and hammer
JP reliability springs
Magpul stock
Harris bipod
Magpul monopod
JP adjustable gas block
JP lightweight stainless steel BCG
Primary arms scope

How does it shoot?? Curious because I have the same barrel on an Aero M5 receiver set.

 

[AMP!]

Another pic of my recent build. As much as I love these colors, I do wish it would warm up!

 

[Chris777]

How does it shoot?? Curious because I have the same barrel on an Aero M5 receiver set.

It shoots pretty well. I will be honest though, I hav me only shot it a handful of times and with a grain that was to light for the 1/10 twist so my groups were a little wider than they should have been BUT it was consistent.

 

[mudpig]

 

[Megachip]

Top 2 are my ar10 builds and bottom two are ar15. Lots of quality parts happy with the outcome

 

[Megachip]

Top 2 are my ar10 builds and bottom two are ar15. Lots of quality parts happy with the outcome

.308
Mega maten
Gessile hi speed national match
16" 1/10 proof barrel
Jp low mass bcg
JP matched enhanced bolt
Titanium firing pin
Magpul stock
Fortis switch foregrip
Slr adjustable titanium gas block
Lantac dragon
Mega hogue grip
Jp silent capture spring
Raptor ambi charging handle
Norgon ambi mag release
Battlearms badass safety selector
V7 titanium castle nut and endplate
V7 aluminum dust cover
Vortex 2.5-10x44


Ar15
Mega
Gessile ssa
14.5" 1/8 proof barrel
Fortis night rail
Lantac dragon
Mega hogue grip
Jp silent capture
Eotech 512
Magpul stock
V7 light weight buffertube
V7 titanium end plate
V7 titanium castle nut
Battle arms titanium takedown pins
V7 titanium mag release
Titanium grip screw
Slr adjustable titanium gas block
V7 Titanium trigger pins
V7 aluminum dust cover
Badger titanium dust cover pin
Badger titanium bolt release
V7 all titanium safety selector
I have a lantac ebcg in it but am going to be swapping it out with a jp low mass bcg

 

[ichigo]

Here's a pics of my build. Still missing scope and have not taken it yet to the range.

 

[opus56]

Decided to have a little fun w/ my AR10.

 

[opus56]

How do you like the Luth MBA? I'm looking to upgrade my magpul fixed MOE

I like it. I have two rifles with the Luth. Easy to get dialed in. Easy to adjust.

 

[Shortbus6588]

I cant say enough good things about the Aero M5, quality made, simple, accurate and reliable. I have a complete factory built rifle in .308. The rifle wears their 18" CMV barrel with rifle length gas system, QPQ finish and their new Atlas R-One handguard. This configuration is lightweight enough and handy. The only change I made to the setup was the trigger, the mil-spec trigger was swapped for a 3.5lb Rise Armament unit.

As far as optics, I tossed a spare Nightforce NXS 5.5-22x56 that I've had laying around until I settle on what scope I want the rifle to have (likely another Eotech VUDU).

Whats really impressive about this stick is accuracy! I shot some mild handloads that I made for another gas gun that I own and the groups were VERY agreeable.

The load was a 155 Horndy BTHP- 42.0gr AR-Comp- Win Brass- CCI LRP- COAL 2.780. Average MV was 2702 FPS

The groups were shot at 100 yards in the prone position, off a bipod and rear bag, one 5 shot group was .6moa, all were less than 1moa when I did my part. The group I posted is 10 shots, the rifle is consistent and didn't change with the the longer shot string.

Of course its the Rifle in the middle, Cheers!

 

[ShooterwithNoName]

Looks awesome shortbus, I've heard tons of good reviews on the Aero M5. I tried to get mine dialed in today. Got close then had to bolt due to sudden sideways rain... its zeroed but still gotta shoot it a bit more to make 100% sure it good:

Got a UBR on the way to replace the HK stock. It's a work in progress...

 

[sobrbiker883]

Just a PSA 16” 308 I tore apart and rebuilt, doing what I built it to do. Sprinco spring and buffer, 16” stainless 1:10, adj rifle length gas block, RRA Varmint 2 stage, BRT Covert comp, Guntec handguard, ACS-L stock, Ergo deluxe grip, Krylon, USO LR-17 tossing Hornady 150 Interlocks sub MOA at 2625.

 

[ichigo]

How do you like the Luth MBA? I'm looking to upgrade my magpul fixed MOE

The magpul fixed feels solid (no play, shake, ruttle). The pad contour feels realy nice and it's easy to install. I like it for the price, I was looking for the stocks that has the cheek rest but it will blow my budget for the build.

 

[flyer]

Aero Precision M5E1 Receiver set w/ matching 15" handguard
308 Winchester Criterion 24-inch Bull barrel from Fulton Armory
APA Little Bastard Gen II
Magpul PRS Gen 3 Stock
Superlative Arms .936 adjustable gas block
Larue MBT-2S Trigger
Seekins Rings
Vortex PST Gen II 3-15x
Harris 6-9 BRM-S

Curious what accuracy people are getting out of their gas guns. I've struggled to squeeze sub-moa accuracy out of this rifle. With my bolt action precision rifle I can consistently shoot 1/2 inch groups at 200 yards, but it seems that my gas guns hover right around MOA and sometimes better.

I have found 2 loads that consistently hover around MOA accuracy or slightly better being 43gr of Reloader 15 with 175 SMK and 41.8gr of IMR 4064 with 175 SMK.

(Please disregard my load data, I do not use either of those 2 loads for a reason)

View attachment 7007922View attachment 7007923

A little late but I have a Criterion 24" bull but in 6.5 Creedmoor and it's a 1/2 MOA shooter with Hornady box ammo. It isn't in an Aero receiver, it has an SR Gold trigger which is a minor upgrade, oversized takedown pins with hand reamed holes for a zero play fit, JP BCG and a JP SCS.

Mine has a plain muzzle, no brake and my scope obviously works.

I would go over everything but start with removing the muzzle brake and swapping on a known good scope. Maybe try some FGMM as a control?

Also avoid caffeine on shooting days, I can see it in my groups even though I don't feel jittery at all.

 

[Billiam1211]

A little late but I have a Criterion 24" bull but in 6.5 Creedmoor and it's a 1/2 MOA shooter with Hornady box ammo. It isn't in an Aero receiver, it has an SR Gold trigger which is a minor upgrade, oversized takedown pins with hand reamed holes for a zero play fit, JP BCG and a JP SCS.

Mine has a plain muzzle, no brake and my scope obviously works.

I would go over everything but start with removing the muzzle brake and swapping on a known good scope. Maybe try some FGMM as a control?

Also avoid caffeine on shooting days, I can see it in my groups even though I don't feel jittery at all.

Since that post, I think I've worked out a load for this rifle and improved my technique for gas guns. I took my Aero M5 308 build to a local PRS match that went out to 600 yards and was spot on all the way out to max distance. They had 8-inch and 10-inch square plates set up at 600 yards, and I went 10/10 on the 8-inch plate after the match was over so I'm pretty happy with the rifle's performance. Next time I'll see if I can set up some paper and get a group in.

+1 on the no caffeine before hitting the range, I learned that the hard way.

 

[AMGtuned]

Here's my "twins". AR10 and 15, both Aero sets and handguards. More fun to shoot than they were to build.

 

[flyer]

Here is a good link with some information on large frame AR carbine buffers:

Technical Support - Tips, Recommendations, Trouble Shooting | POF-USA

The POF-USA Technical Support page has all the info you need to keep your rifle in proper working condition. Find out more about your firearm.

pof-usa.com

The section on "Buffer comparison (P308 carbine stock)" has pictures and descriptions of the two different types of large frame AR carbine buffer setups.

I like using their 7 position buffer tube setup which is essentially identical to the "AR10" carbine setup. Their older 6 position buffer tube with shorty buffer is essentially the same as the DPMS style carbine setup.

POF occasionally has sales with 15% off which is the cheapest "AR10" length buffer tube I've found beside PSA (which has no anti-tilt feature and the build quality doesn't compare). POF offers it in a package with spring and buffer but if you price them separately, the package has no discount. I usually buy the tube and spring from POF and figure out the buffer later because it's a standard AR part and I have a few flavors I swap out to figure out what works best. That way I don't buy a bunch of unused buffers.

 

[TheChris]

Hi there! New to the forum so I thought I'd start off here with my .308 build, pictured below.

JP 18" barrel, Griffin Armament brake for use with Paladin, SLR Rail on the Aero M5 receiver set, JP Silent Capture Spring, Geissele SD-E trigger. Just got new furniture today so will be swapping over to a Magpul STR and MOE+ grip. I know I prefer the STR for bench shooting but we'll see if I like the MOE+ better than the fat Ergo.

 

[PusherX11]

I’ll Play,

Spikes Jack10 receiver set
16” proof barrel, jp bolt, jp low mass bcg
APA C.H.O.D.E muzzle brake
JL Billet 15” angle cut hand guard
Geissele high speed national match trigger
PWS gen 2 buffer tube
Jp silent captured spring
JL Billet MBS stock
ZCO420 MPCT 2

 

[ShooterwithNoName]

Got the UBR installed. Cool thing about going with the UBR is it allowed me to run a standard AR15 buffer which opens up a lot of easier to find and tune buffers vs. the short 308 carbine buffer.

Plus its an amazing stock, locks up tighter than any other collapsible I've tried. Plus the longer tube makes for a little lighter recoil impulse. Running a T2 in it now. Can't recommend this stock enough.

 

[AMGtuned]

StraightJacket barrel system. 1.25" aluminum sleeved.

What is going on with those barrels? Are they structured barrels?

 

[Yama Arashi]

 

[donho00]

I recently rebarreled/re-railed my large frame.

Was a fan of 260rem. And Dracos had a fire sale. So i tried it.
Will list JP heavy 308/SLR9/Noveske 15 inch rail when i return to the states

Same as before.
But new Dracos 22 inch 260 rem
Precision Armament M11 brake
Falkor Breacher rail

I ended up with 3 tungsten weights on the silent buffer. Ejection seems decent without an adjustable gas system. Maybe 4 oclock ejection. clean brass.

Only break in and quick zero so far. Will load test and zero when i get back. But 130 eld looks promising
(The 140gr didnt fit in mag)

 

[CNJarvis]

Here's Mine:

Upper - Aero M5E1
Lower - Aero
Handguard – Aero Enhanced M5 G2, 15”
Barrel - SS Proof Research 22", 260 Rem., Rifle +2"
Grip – Magpul MOE
Trigger – Geissele SSA-E
BCG - Brownells Nitrided
Stock - Brownells A1
Cartridge - 260 Rem.
Gas Block - Superlative adjustable, clamp-on
Buffer & Spring - Standard + 3 tungsten weights.
Brake - Impact Precision
Bipod - Magpul
Scope - Vortex PST II, 3-15x44, EBR-2D
Mount - Vortex
Finish - Duracoat "Snow Gray"

 

[Mtkrusmark]

DPMS LR308

optic - vortex strike eagle 4-24×50 with lighted reticle in MOA
barrel - x caliber 16" stainless heavy 1:8 twist 6 groove cryotreated.
suppressor - dead air sand man L
bolt - jp matching bolt for the barrel
gas block - JP adjustable gas block
pistol grip - caa interchangeable
buttstock - fab defense g shock with monopod add on
bipod - Caldwell accumax 6-9"
handguard - breek arms forward cut 15"

 

[rpoL98]

Aero M5, Aero BCG, Criterion 20" SS 308 barrel, SSA-E, Avalanche CH, SLR adj GB, PA M4-72 brake, UTG rail, Vortex Diamondback Tactical 4-16X.

 

[shooter65]

6mm Creedmoor AR. Wilson Combat barrel, CMC 2.5 lb trigger, MG STR
PSA upper/ lower.

 

[opus56]

Nice job. I know the feeling after buttoning it all up. i would love to know how that brake holds up on a gas gun. Please update.

I had the brake on for 8 months (then went to a Dead Air Suppressor) and it held up great. It still looks like new. When you first put them on, you need to reach up and tighten it several times before it completely settles down and stays tight. Without a doubt, awesome brakes.

 

[Dogsniper]

6mm Creedmoor AR. Wilson Combat barrel, CMC 2.5 lb trigger, MG STR
PSA upper/ lower.

View attachment 7085828View attachment 7085829View attachment 7085834View attachment 7085835

How’s it shoot?

 

[shooter65]

How’s it shoot?

Haven't shot it yet. Back is fucked up again.

 

[shooter65]