Colt M4A1 SOCOM factory upper receiver group, Block 1, complete
Genuine Colt M4A1 SOCOM factory upper receiver group — Block 1 configuration, complete and with a pinned and welded extended A2 flash hider (not a Short Barreled Rifle). This is the real article: a Colt flat-top upper assembled at the Hartford plant to the same Technical Data Package spec that built the M4A1 carbines fielded by U.S. SOCOM units in the early GWOT years.
Complete assembly includes the Colt 14.5-inch 1:7 twist chrome-lined barrel with the correct M4 profile and step-cut for the M203, front sight tower with bayonet lug and side sling swivel, Knights Armament KAC RAS M4 rail system, A2-pattern birdcage extended flash hider, and a full bolt carrier group and charging handle. The receiver is forged 7075-T6 aluminum with the Colt M4 feedramps. Note: most of these uppers do NOT come with a Colt CAGE Code or C marking, it is just the way Colt started doing things. Comes in mil-spec anti-corrosion plastic with plenty of Colt oil.
This upper is the correct foundation for a clone-correct Block 1 M4A1 build — the configuration run by SOF operators in Afghanistan and Iraq circa 2002-2006. Drops onto any mil-spec lower. Non-SBR: the barrel is 14.5 inchesbut measures 16" with the semi-permanently attached flash hider.
Factory Colt SOCOM uppers do not come up often. Order yours today.
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