Colt
Colt 6921 EPR 5.56 Upper Receiver Assembly | 14.5" Barrel
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- LE6921EPR-CK-PW
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Description
The Colt M4 LE6921EPR PW (Pinned and Welded) upper group is a complete AR-15 upper assembly built around a 14.5-inch barrel and chambered for .223 Rem/5.56 NATO. This kit ships with a bolt carrier group and features a matte black finish designed for utility and longevity as well as front and rear Magpul sights. The 1:7 rate of twist supports a broad range of projectile weights, and the muzzle is threaded 1/2-28 for compatibility with common muzzle devices. It is intended for shooters assembling or upgrading AR-15 platform rifles for range use, competition, or duty-style applications.
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