Jump to content
308AR.com Community
  • Visit Aero Precision
  • Visit Brownells
  • Visit EuroOptic
  • Visit Site
  • Visit Beachin Tactical
  • Visit Rainier Arms
  • Visit Ballistic Advantage
  • Visit Palmetto State Armory
  • Visit Cabelas
  • Visit Sportsmans Guide
SgtDog0311

First venture... will appreciate input

Recommended Posts

Thanks RedRiverII.   Didn't know if people thought that ran a risk of marring the barrel extension or not.   Looks like a good way to isolate the torque utilizing the vise for another set of hands.  I'm sure there are a few ways to get the job done.   Of the two methods of holding the receiver in a vice was especially curious about the PlastiX vs the Receiver block insofar as ease of work went and protecting the receiver from torque.   Think I'll go with the PlastiX and learn for myself.   btw... 37.99 it was!

Share this post


Link to post
Share on other sites

I have used this one for a few years now without issue but did just order a Geissele reaction rod yesterday due to a 300 BO with a stuck barrel nut, f***ing PSA.............

https://www.plastixrevolution.net/collections/ar10-upper-receiver-vise-blocks/products/223-ar-15-308-ar-10-upper-receiver-vise-block

Share this post


Link to post
Share on other sites

Thanks JT, I ordered one of their sets a couple hours ago.   Its all new to me but coming together the more reading I do.   Appreciate the input.

Share this post


Link to post
Share on other sites

Parts delivered thru this weekend.   Still got a flubbed-up order to straighten out with Primary Arms in the morning, a barrel to wait on from Criterion and a KAC front sight to receive, otherwise I guess the next step is to park myself in front of some videos.   Sent an AERO bolt I got on sale to Criterion but bought go/no-gauges anyway, since I have more than one .308.   

There are a lot of images of rifles straight from AERO that would represent my end-state but I've added the following:

  • Superlative Adjustable Gas block.
  • VG6 Muzzle Break
  • 18” ‘Criterion’ Hybrid Contour barrel
  • Rifle length gas system
  • Two Stage LarRue Trigger (desert tan pistol grip)
  • Ambidextrous Raptor Charging handle
  • FTE cerakote 15" Hand guard
  • Knights KAC sights

I'm no connoisseur, ascetically, so I hope the FTE or Desert Tan hand guard, stock and pistol grip will look good with the black receiver.  

AERO build parts.jpg

AERO Receiver Knights KAC Rapter Ambi.jpg

Share this post


Link to post
Share on other sites
2 minutes ago, SgtDog0311 said:

Superlative Adjustable Gas block.

Look forward to hearing if this block will adjust far enough on the bleed off side to not lock back. Never got it to work on my 16 in. rifle gas.

Share this post


Link to post
Share on other sites
22 minutes ago, SgtDog0311 said:

I'm no connoisseur, ascetically, so I hope the FTE or Desert Tan hand guard, stock and pistol grip will look good with the black receiver.  

 

I like two tone guns, I think it will look just fine. I've got a Matrix Arms 308 build that is burnt bronze cerakote with black furniture and it looks great!:thumbup:

Share this post


Link to post
Share on other sites

JT, you know my experience level here.   As in none.   Got differing input so thought I’d go with the most flexible.   Hope the rifle length gas system makes the difference then!   
 

heminut, thanks.   Sure that burnt bronze.

Share this post


Link to post
Share on other sites
5 minutes ago, SgtDog0311 said:

“Like” that burnt bronze!

It's a great Cerakote color, but make SURE you add enough hardener to it to keep if "flat" and not "semi" or "gloss".  If you make that mistake, it looks like a big gold tooth.  I kid you not.  I screwed up painting an EOTech of mine, and the damn thing came out looking like that big gold tooth.  I had to strip and paint that thing three times to get it right.  Make Burnt Bronze a FLAT finish when you do it...   :thumbup:

Share this post


Link to post
Share on other sites

LPK, Larue trigger, buffer tube and stock installed.   Still working on obtaining lapping compound and bedding loctite for barrel interface.  The 120 grit lapping compound G&G sent with their tool feels like I'm using gravel from the drive so gonna get some 220 grit to finish lapping.   Otherwise I've got everything under my roof to put it together. 

And of course since I got it that far together I had to do a little mock up. Still a ways to go with the barrel. Does not feel too heavy at all for a fella used to his Ballard single-shots.

I better understand how "enhanced" versions of the AERO Upper limit a guy on the hand guards.   And squaring off the face of the receiver extension is altogether different.   Barrel nut goes from female threads to male threads and lapping tool goes down inside the extension - working on the face of the receiver instead of the face of the extension for squaring up that interface.

Trigger LPK Buffer and Stock.jpg

Mock up (3).jpg

Share this post


Link to post
Share on other sites
17 hours ago, SgtDog0311 said:

220 grit to finish lapping. 

That's what I have been using, came with my Wheeler ring lapping kit. 

Share this post


Link to post
Share on other sites

OK, match schedule been taking precedence last two seasons so so just now getting to shoot this.  

Got cycling problems and need help trouble shooting.

Adjusted the superlative gas block all the way down then counted three revolutions open.  Then 3rds stripped off top of magazine and cycled/shot - no problem.   Next adjustment to 4 revolutions & produced a jam.  Round partially sripped off the top of mag but cocked and dented going in chamber.   Back to 3 revolutions and repeat of jam.   2&1/2, again jam.   

Several instances of failing to strip round from magazine and sent bolt home on empty chamber, including first pull/release of charging handle/bolt.

AERO upper and lower, mags are magpul, rifle gas length system, rifle length buffer with Armalite 6-position tube and rifle buffer.   18” Criterion barrel, aero bolt.   What else do I need to add to help diagnose the problem?

in advance - Thanks!

Share this post


Link to post
Share on other sites
5 hours ago, shooterrex said:

Rifle buffer in carbine buffer tube? That is a problem. If you load only 1 round in the mag and shoot does it lock back on an empty mag?

Something I was thinking too...

Share this post


Link to post
Share on other sites
9 hours ago, SgtDog0311 said:

 rifle length buffer with Armalite 6-position tube and rifle buffer.  

You're running a 5.200" long buffer in an extension that needs to run a 3.250" long buffer.   Any old AR15 Carbine H3 buffer is what you need, or the gen-u-wine Armalite AR-10 Carbine buffer - which is an AR15 Carbine H3 buffer.

Double check the internal depth of your receiver extension.  It should measure out at 7 5/8" internal depth.  If it measures 6 15/16" internal, or 7.000" internal - then it might be Armalite, but it's the M-15 (AR15) version, and not the AR-10 Carbine version.

Edited by 98Z5V

Share this post


Link to post
Share on other sites

Thanks for the responses!

per recommendations on page one I ordered the Armalite Rifle buffer/receiver extension.   Just pulled and measured.   Stuck a small rod and marked - mark is at 7&11/16”.    Buffer is 3&1/4”

 

Share this post


Link to post
Share on other sites
On 10/17/2020 at 11:00 AM, SgtDog0311 said:

Thanks for the responses!

per recommendations on page one I ordered the Armalite Rifle buffer/receiver extension.   Just pulled and measured.   Stuck a small rod and marked - mark is at 7&11/16”.    Buffer is 3&1/4”

 

Those are good numbers, and not your problem.  What spring?  Let's start looking at other things, besides the recoil system (and the info on the spring).  If it's all - ALL - Armalite, then it's the EA1095 spring - and we don't need to worry about it. 

Something else is going on, and it's not the recoil system.

For the record, though - that's not the dimensions for the Armalite RIFLE buffer/receiver extension kit - that's the Armalite AR-10 CARBINE receiver extension kit...

Edited by 98Z5V

Share this post


Link to post
Share on other sites

Thanks for the correction 98Z5V.

I sure-enough had the rifle/carbine part of that acquisition turned around in my noggin.

I’m starting to think back on the sequence I followed seating my magazines, (Bolt closed or open) as we fiddled with the GB adjustment.

could be I was contributing.

going to try one round in mag, set GB at two full rotations and increase till bolt locks back - then try again with multiple rounds in the magazine.   I’ll post back when I get to do that.

Share this post


Link to post
Share on other sites
8 hours ago, shooterrex said:

How about starting wide open and close it a bit at a time till it doesn't lock back on an empty mag. Then open up just a bit.

^^^  That right there is the way to set up an adjustable gas block.  You always start Wide-Open...  

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...