Description

CORE15 Mil-Spec Forged 7075-T6 M-4 Upper Receiver, Type III Class II Hard-coat anodized finish, M4 feed ramps, (1913 Picatinny rail flat top) w/ dry lube internal finish and laser engraved T-markings. 16" 4140 Chrome Moly M4 profile Chrome Lined Barrel 1:7 Twist, Chambered in .223/5.56 x 45 mm NATO, Direct Gas Impingement Gas System.

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