What length handguard is that?
Thanks

Out of curiosity, were you able to determine the exact cause of the lug peening?

Tangentially, did your urx require any machining to fit as it does on that rifle? Mine has about a .060 gap and I'm debating whether or not to have someone take some off the barrel extension or the receiver.

I have a setup almost identical except I have a pined 14.5 wilson combat 1-10 recon tac barrel and aero buffer tube, spring and buffer. Mines runs great suppressed and unsuppressed.
Just some info to help you troubleshoot. Maybe try the lighter buffer as it seems besides gas length and twist rate our rifles are very similar.

What pistol grip is this?

I think I narrowed it down to the carrier being the issue.  Either dimensionally it was too small allowing for excess movement in the carrier bore or something was off with the cam pin track.  I’ll likely do some more testing and measuring to better nail down exactly what it was when I get some more free time.  

As for the URX, I just lucked out and it timed perfectly with the single shim required for mounting, so no machining on mine.

BCM

Attached File

I’m building a similar rifle as yours. What are the specs on the buffer tube and buffer setup? I have a spare SLS and I want to make sure it fully collapses.

Hey look, a white chocolate Resse cup.



I've been hauling around 500+ rounds of 308 for the past 10 years through multiple moves and have never owned a 308. It's time. I set out to build a, not too heavy, carbine specifically for hunting (Not going for a heavy precision distance hole puncher).

Aero receivers
Aero LPK
Ballistic Advantage 16" Modern Middy
Centurion Blem 14" rail
Larue MBT
Rustoleum camo spray paint; It was tan or khaki. Not sure which one I used.

I still need a BCG and an optic. I could also use recommendations on shims for timing the AAC 51t comp. Strike Industries makes a cheap 5/8x24 kit, but I have no experience outside of AACs kits and I can't find one of those in stock anywhere.

Leaning towards a demo Mark 5HD 3.5-18/Geissele 35mm DDC mount if covid didn't completely kill off Geissele.

I use Precision Reflex shims They are the only set that I know of that includes 0.002" shims, most others only go down to 0.003". It may not sound like an issue, but it has helped with some installs. They are also true 0.75" OD.
PRI shims

ETA: I also use Rocksett for threadlocker.

Dunno if anyone is in need of a barrel, but the new Stag Arms has some available on their site.

I went with a chrome-lined 16” “tac gov” .308 barrel (profile looks the same as the BA of the same name) but they also have them in nitride, plus HBARs in various lengths as well. .308 and 6.5 CM.

https://www.stagarms.com/stag-10-barrels/

Don’t have a barrel nut/handguard but it fits into my M5 upper just fine and the Aero bolt locks up as expected. Seems like a nicely made barrel.

https://www.opticsplanet.com/advanced-armament-corporation-shim-kit-7-62mm-5-8-24-750-in-od-x-625-in-id.html

Nice rifle @Vesticles
I’m Kinda late, but thought I’d ask.
What’s your overall opinion of the bog tripod, is it free holding up the rifle in the pic?
Solid? As in locking up the gun/rail on it?
I’m looking at one and can’t make up my mind

Thanks

Thanks for the suggestion. I'll order a pack.

Thanks for the suggestion, but I've already been fooled once by optics planet. I won't be fooled twice. I trust their stock status as much as I trust a cold-sweat "fart."

I'll report back on how the PRI 5/8x24 shims work with the AAC 51t.

Anyone put a Strike Industries AR-10 Ultimate Dust Cover on an Aero M5 308 upper?  I noticed in the description it says -

"Note:for the AR-10 308
The SI UDC has been tested and fits on Mega Arms MATEN, DPMS Oracle, SIG 716, YHM, and SW perfectly. It is easily modified to fit other receivers with light sanding.
The 308 UDC-E is not guaranteed to fit all receivers nor be able to be modified to fit due to there being no standard for the AR10 platform."

https://www.joeboboutfitters.com/Strike-Industries-Ultimate-Dust-Cover-308-Stan-p/si-ar-udc-e-308.htm

Didn't notice that till after I ordered it of course.  The upper is supposed to get here Friday, I guess I'll find out for sure then.

I have one on mine and it works great.

Awesome, thanks!  I was wondering if I should try & order a different one in case those also become damn near impossible to find at something resembling a reasonable price like so many other things are.

Aero m5 upper & lower
Centurion 12” rail
Silencerco single port brake
KAK 12.5 barrel
Aero lpk with dpms bolt catch and larue mbt
Superlative arms adjustable gas block
Lantac BCG
Tango down grip
Strike industries upper parts, buffer plate & nut
KAK carbine tube
Springco orange carbine buffer spring
Expo arms heavy buffer.

Well, looks like I'm joining the M5 club.

Just browsing AP's site last night looking at their ATLAS handguards and saw that they had these S-One barreled uppers in stock for $609, black 15" M-Lok.  So I pulled the trigger on one, and 8 20rd .308 PMags, and got a surprise 10% first timer discount!  

FYI, the complete M5 upper showed in stock until just about an hour ago, now it's OOS.



I then spent the rest of the evening and a good chunk of today researching (this thread helped a lot) and tracking down the rest of the parts I'd need to get shooting, then getting them ordered (or digging them out of a drawer or box).  

Aero .308 LPK
Aero Enhanced carbine buffer tube kit (already had a spare)
JP .308 SCSS with spring kit (big fan of the SCSS in my small frame builds)
Aero Breach ambi charging handle (really wanted a Raptor, but none in stock, and at least it's got the big A logo...)
Radian Talon ambi safety, black
Larue MBT-2S (already had a spare, and two more on back order)
Phase 5 EBRv2/308 bolt release (also a big fan)
BCM Mod 1 SOPMOD stock (already had spare)
VG6 7.62 Gamma
Magpul K2+ OD Green grip (also spare parts)
Billet DPMS-style lower (80% I bought a couple years ago from 5D Tactical in a jig bundle, never milled, and totally forgot about until FJB made me think of it recently.  I'll mill this out soon, but plan on getting an Aero M5 stripped lower when I can find one in stock)
Slate Black OD green MLOK rail panels and hand stop (another product I'm a fan of)
Finding a BCG was a stone cold bitch, but I scored a Precision Reflex from Sportsman's Guide, of all places.  Probably not world class, but it'll get me going bang until Aero gets more in stock, and SG still has them in stock as of writing this.

Still waffling on an optic, but I've got an Arrowhead 1-10 red BDC and Aero SPR mount I could borrow off a Grendel build or a Sig Romeo4H/Juliet4 RDS/4x magnifier combo still sitting in the box, and a plethora of top and offset BUIS in a drawer to chose from.  Since it's likely just going to be a 50yd-300yd range toy and get (very) occasional hog hunting use, not going to drop a lot on an optic at this point.  

Also grabbed 600 rounds of this Norma 150gr plinking stuff for $440+$85 shipping, which seems reasonably priced for new loaded brass in 2021

All that should get me shooting, I'll tweak and upgrade as needed.  I also have a couple cans of OD Aluma-Hyde stashed, we'll see how that goes, probably do the BCM stock at the very least, just to match the pistol grip, handstop and rail panels.

You might want to look a little deeper into that ammo place. No personal experience.
BBB ammoshoponline

I bought a thousand rounds of Norma 55gr .223 and four bricks of Norma 40gr 22LR from them last month.  Got it in four or five days, no issues.

Hmm, the black 18" M5/R-One 15" complete uppers are in stock at Aero now.

out of stock

New optic

Attached File

Mine works fine.

I bought the 14.5 308 wilson combat barrel and it will not eject the brass  the brass is scraped when it comes out  I tried a light polish of the barrel extension lugs? but have not reassembled it yet to test it  It was very rough and the triangular part between the left side and right side feed ramp is cut irregularly.  not super impressed with wilson combat barrels.   I ordered a ballistic advantage barrel as a low cost otptin and a v seven barrel that was expensive  I may try one of those and have a gunsmith change out the barrel extension on the wilson combat barrel?

The chances of getting a new barrel extension to line up properly with the existing gas port are slim to none.

As posted above, the barrel extension indexing pin lining up with the gas port would be rare. As far as cycling issues, make sure you have the correct length gas tube, it should end at the center of the cam pin cut-out. That barrel may use a unique length gas tube (Wilson Combat Match Grade Intermediate 13 1/4"). Scrapes along the body of the brass are caused by sharp edges on the inboard lug area of the extension at the 3:30 position, which can be dressed up.

Thank you for the help    I can always count on the minds of AR15 to remind me I'm retarded as I forget from time to time.
Just measured my gas tube and it is 12 inches not the 13.25 the barrel calls for!
Now if they will just get it back in stock
The correct gas tube and the very light polishing on the ramps/lugs I bet will do it

Shopping for handguards & thought I was all squared away cause I knew which height upper I had.   Now I find some places don't list either high or low, but for DPMS handguards they will say "standard" DPMS height, so for high vs low profile, which one is considered "standard"?   Unless their is a 3rd height I haven't heard about.  Now not only can't they get the dimensions standard across the platform, or even from one manufacturer, they can't even get the terms standardized.  It wasn't too hard to figure out high profile/shelf/height & low profile/shelf/height, but which if either is "standard" profile/shelf/height?

I don't know for a fact which gas tube your barrel requires, but it should end up looking something like this:

Here. a list of gas tube lengths:

DPMS LR-308 Gas Tube (also AR15):

Pistol 6-5/8 - 6-3/4
Carbine 9-3/4 - 9-7/8
Mid-Length 11-3/4 - 11-7/8
Intermediate 13-3/4
Rifle 15-1/8 - 15-1/4
Rifle+2 17-1/8

Armalite Gas Tube:

Super SASS Carbine (308) 11"
Mid length Carbine (308) 12 1/16"
Rifle (308) 15-1/2 "
Carbine (223) 9-3/4 "
Mid (223) 11-3/4"
Rifle (223) 15-3/16"

Oddballs:

Wilson Combat Match Grade Intermediate 13 1/4"
Knight's Armament SR-15 Mod 1. Mid-Length 13"

My upper got here Friday & I put the door in & snapped it in place.  Fit great, then when I opened it, I realized I still needed to get the spring positioned right.   So far I'm really liking it.

I kept the paper from wilson outlining the specs including the need for a 13.25 inch gas tube but somehow I missed it   Thank you for the picture !

What optic and mount is that?

@RJeff21

Razor 1-10x and Geissele mount.

It deserves a coyote sopmod over the parts bin waffle stock.

Attached File


Attached File


Enhanced upper and handguard
JP Precision 18” barrel with matched bolt
JP Precision light weight bolt carrier
JP Precision captured buffer spring
JP Precision adjustable gas block
Radion Raptor charging handle
Bushnell DMR IIi 3.5x21
American Defense scope mount
Lantac Dragon brake with ASR mount
Magpul ACS stock
Silencerco Hybrid 46
Rauch Precision suppressor cover
I forget who makes the adjustable trigger but it’s pretty good.

Here's my first Aero M5 build. I've been waiting on the  rail to be in stock for about 3.5 months while I had everything else I needed to assemble it.

Upper:
Aero M5 upper (blem)
Aero M5 Atlas S-one 15" rail
Faxon Big gunner 18" .308 barrel. rifle length gas
Aero .308 Nitride bcg
Aero .750 Adjustable gas block
Dead Air Xeno brake
Aero Breach Charging handle

Lower:
Aero M5 lower (blem)
Aero Lpk
Larue trigger MBT-2s
Aero M5 Carbine buffer kit
Magpul SL stock
7.8lbs unloaded

Things to buy/do: 2-10x42 GLX or PST Gen2. I just like primary arms reticle way more.
Make a sling
Magpul bipod
Spray paint

I took it to the range today just to function check it with irons@50yrds and I'm pleased with how it shoots with that adjustable gas block.
No malfunctions what so ever.
Winchester white box M80. First pic group I think was a fluke and then I got the windage pretty close on the second one. I've got some fgmm to see what that barrel will do when I get a scope mounted. If it shoots an inch I'll be happy. I know this thread was a lot of help????

My Atlas S-One complete 18" upper came in today.  

Quick question, is there any way to remove the ejection port cover without removing the barrel nut?  I want to use another Strike polymer cover.

16” 6.5 Creedmoor with AP upper and lower.  Wilson Combat Barrel and BCG.  Mag Pul furniture.  Apex 15” hand guard.  LaRue trigger.  SLR adjustable gas block until a WCB comes in. Attached File

maybe with a Dremel cut-off wheel.

That was my thinking too, but I think I'm going to avoid that by just removing the barrel nut.

The ATLAS barrel nut wrench was out of stock just about everywhere (including Aero), but managed to find one in stock online after some digging (four pages deep in a Google search).  Aero really should include those and the Torx wrench for the turnbuckle in the complete ATLAS upper kits, not just the handguard kits.  

$5.00 wrench and $7.00 shipping, but hey, in for a penny, in for a pound, right?

If your complete upper came in the factory box, make sure and look between the cardboard and the foam eggcrate. They usually ship the wrench there.
ETA: Same with the Torx.

Nothing else in the box but an Aero sticker.  Came direct from Aero too.

FYI, the AR15 Atlas barrel nut wrench does not fit.  So I submitted a ticked to Aero, and 30 seconds after I sent it, I saw this listed on the product page for an Atlas M5 handguard.

PLEASE NOTE: These handguards do not come with a wrench. A standard armorers wrench will work with all M5 ATLAS Handguards.

Duh!  Been so long since I actually used a standard wrench in this age of Keymod and M-Lok, I didn't even think about it.

I'm so torn between the direction I want to go with my next optic for a 16" setup I'm piecing together.

Nightforce 4-16 ATACR
Leupold 3.7-18 MK5HD
or go with something like a Vortex 1-10

So, I did a thing today...





Brownells OD Green Alumahyde.

Debating on leaving it as-is, or going for the played out battleworn look with some black rattlecan once the Alumahyde cures.

EDIT: Dust cover is sacrificial, have a plain black Strike capsule to replace it with, and I masked off the face of the shell deflector before painting, and used an old Magpul rail cover on the upper to act as a mask for the T-marks.  Also painted lower and stock to match, but buffer tube, pistol grip, Slate Black rail covers, charging handle and controls, scope, mount and BUIS will all be black.

Attached File