New 11 1/2" Carbine build..

AR/M4 AR Pistols & Pistol Caliber ARs
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So I decided to just cut a ESS 16" 1/9 barrel down to 11.5"… I took my virgin PSA lower and put it to use with a Phase 5 Pistol tube and Carbine buffer/spring…

I added a simple sling point on it…

Barrel came in from Copes for $104 shipped… (4th of July Sale…)

Cut it at the muzzle end of the ‘notch’… worked to 11 1/2" pretty good…

Next to my 14 1/2" BCM (with pin/welded comp) for length comparison…

Test fired 4 shots of Federal 556 to function check… all well thus far…

(I did buy #46-43 drill bits in case I need to open the gas port…)

Waiting on my free-float handguard and flash hider…

Threading the barrel tomorrow if my TAT shows up in the mail from CNC…

Stay tuned…

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And now threading… got the Threading TAT in today…

Barrel was 0.615" diameter so I went with 5/8-24R (I already had the DIE from a 762 threading job last spring)… :wink:

Flash Hider (1 3/4" in overall length) on 1/2 way…

Waiting on the FF handguard and MBUS set…

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coming along nice.

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My GRG 10" FF rail ($56) came in early… :slight_smile:

Its not a perfect rail… its a smidge wider than my upper receiver and a little out of spec…

I like the long holes for air flow and weight reduction… I figure 12oz for the rail (using MI weights)…

Debating on closing up the end of the rail with a ‘cap’…

And the photo shot…

Overall happy… full range trip in like 2 weeks… :smile:

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You crowned it, right?

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Based on 2nd to last pic…my guess is no? :confused:

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I test fired without crown and it was gtg…

Will do crown after I move and get $$ for the tool…