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#5644266 - 03/09/15 11:22 PM First Complete AR Build, 300Blackout Pistol
shumpertdavid Online   content
Bird Dog

Registered: 04/25/11
Posts: 272
This was my first full build. I had assembled several lowers and rebuilt 1 dedicated 22 upper prior to this. I traded some surplus 7.62x51 for the 7.5" barrel and began a build from there. It's a mix of new, used, and on sale parts. I used a PSA blem upper, Delaware Machinery blem lower, JP adjustable gas block (modified by adding a set screw to lock the gas port screw), Mas Defense 7.5" 1:7 twist barrel, Primary Weapons System FSC30 compensator, Guntec slim keymod freefloat handguard and pistol buffer for the Sig Brace, nickel boron BCG, basic LPK & upper build kit, & Vortex strikefire.

I had the gas block, upper, and lower receivers cerakoted in titanium but decided to leave the other components alone until I decide if there will be any changes. I've only put 60 rounds through it so far, it's one loud little fire cracker.




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#5644270 - 03/09/15 11:24 PM Re: First Complete AR Build, 300Blackout Pistol [Re: shumpertdavid]
shumpertdavid Online   content
Bird Dog

Registered: 04/25/11
Posts: 272




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#5644305 - 03/09/15 11:54 PM Re: First Complete AR Build, 300Blackout Pistol [Re: shumpertdavid]
Ronnie Oneal Offline
Pro Tracker

Registered: 08/18/11
Posts: 1549
Loc: Grayson Co
How accurate is it? It looks awesome.

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#5644358 - 03/10/15 01:52 AM Re: First Complete AR Build, 300Blackout Pistol [Re: shumpertdavid]
dogcatcher Online   content
THF Celebrity

Registered: 07/17/06
Posts: 83199
Loc: Abilene or on the road...
Looks good.
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#5644373 - 03/10/15 03:24 AM Re: First Complete AR Build, 300Blackout Pistol [Re: Ronnie Oneal]
shumpertdavid Online   content
Bird Dog

Registered: 04/25/11
Posts: 272
Originally Posted By: Ronnie Oneal
How accurate is it? It looks awesome.


I didn't focus heavy on accuracy in my testing yet. I was mainly checking function, getting the gas block adjusted, and roughly dialing in the strikefire and iron sights. I was shooting at 50 yards from a kneeled position and putting everything on a 10" steel.

That's with some cheap supersonic Remington's from academy. I need to test on paper to see if the bullets are stabilizing, and if so then it will be on to subsonic load development.

I'm very pleased with the outcome so far, I hope it's a decent shooter. It may be my inspiration to SBR and get into silencers.

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#5644416 - 03/10/15 06:14 AM Re: First Complete AR Build, 300Blackout Pistol [Re: shumpertdavid]
texretvet Offline
THF Trophy Hunter

Registered: 04/30/08
Posts: 6939
Loc: Corsicana TX
up
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#5644461 - 03/10/15 07:14 AM Re: First Complete AR Build, 300Blackout Pistol [Re: shumpertdavid]
JRJ6 Offline
Extreme Tracker

Registered: 03/13/14
Posts: 4003
Loc: Dallas, TX
looks good.

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#5644490 - 03/10/15 07:41 AM Re: First Complete AR Build, 300Blackout Pistol [Re: shumpertdavid]
Pitchfork Predator Online   content
THF Celebrity

Registered: 01/25/13
Posts: 12838
Loc: Murphy, TX Dickens county
Turned out nice. up
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#5644704 - 03/10/15 10:02 AM Re: First Complete AR Build, 300Blackout Pistol [Re: Pitchfork Predator]
tdecker22 Offline
THF Trophy Hunter

Registered: 12/22/09
Posts: 5151
Loc: Emory,TX
Originally Posted By: Pitchfork Predator
Turned out nice. up
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