USA manufactured .223/5.56 stripped 16" M4 Style 1:9 twist AR15 Barrel, Threaded 1/2 x 28 tpi,
with gas hole drilled and chamber extension installed. Military
parkerized finish, not chrome lined. For use with a .750 gas block and a carbine length gas tube.
Barrels are M4 OD profile and are not M4 feed ramp cut.
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