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Accessories 18" 5.56 NATO 1:7 twist Douglas SPR Profile Barrel chambered by Compass Lake Engineering / BCM Upper Receiver

txbass97

Sergeant of the Hide
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Minuteman
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Oct 28, 2022
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North Texas
Zelle - Venmo - PP FF accepted - I ship same or next day in most cases. Prices are shipped

Began life as MK12 style upper, then later converted to a modern ARCA rail...decided to switch to 6mm ARC so selling this.

BCM M4 Upper receiver / Douglas 5.56 NATO 1:7 twist SPR Profile barrel 1/2-28 threaded muzzle - chambered by Compass Lake Engineering -

1,500 - 2,000 rounds of 77 grain down the pipe, slow to moderate precision firing schedule. Will accept Allen Engineering Brake/collar for AEM5/OCM5 suppressors. Shoots nice tight 3/4" MOA groups with 77gr factory match ammo. Slightly better with reloads.

Upper receiver face was lapped prior to barrel install; barrel extension bedded with Loctite 620 for a very tight and uniform mating surface. You're not separating the barrel from the upper without getting it extremely hot...therefore I'm selling this as a pair ------------------>$300

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