Experience unmatched power, precision, and durability with our Colt M4 Upper Receiver Group. This model, built with military-grade specifications, features a 14.5" barrel, a carry handle, front sight base (FSB), and side-swivel sling mount. It's designed to give your firearm a leading edge in performance while maintaining stringent quality standards and that military grade build and clone look. Whether you're a firearms enthusiast or a military professional, this upper receiver group stands as a superior mate to a military grade forged lower receiver.
High-Quality Construction: This Colt M4 Upper Receiver Group is forged from 7075 aluminum, black anodized, and comes with M4 feed ramps. The white painted T marks and interior dry lubricant film (DFL) are applied according to the exact specifications used by the US military.
Superior Performance Barrel: The 14.5" M4 profile barrel, equipped with an A2 flash hider, is made of military-grade 4140 chrome-moly steel alloy. It's chrome-lined, chambered in 5.56 NATO, and comes with a phosphate exterior, ensuring longevity and superior performance.
Customizable Features: You have the option to have your barrel pinned and welded for an additional fee. As is, the upper receiver group would be a short barreled rifle, and subject to registration with the ATF, but perhaps you have a special muzzle device you want to have permanently attached. We also offer that service, and sell a good variety of muzzle devices, if interested.
Traditional Sight Base & Hand Guards: The Colt A-frame front sight base offers an advanced version without an "F" mark but maintains the F-marked size. Plus, enjoy the dual insulated hand guards for enhanced usability.
Convenient Carry Handle & Sling Mount: The Colt screw-on carry handle and front side-swivel sling mount are designed for your convenience and ease of carrying and are true to military clone standards.
Ready to Use: Ships in sealed plastic with oil, milspec clear plastic. Get your Colt M4 Upper Receiver Group right out of the package and hit the range.
NOTE: Does not include a BCG or a charging handle.
Q: Does the Colt M4 Upper Receiver Group come with a BCG or charging handle? A: No, the Colt M4 Upper Receiver Group does not include a BCG or a charging handle.
Q: What is the material used for the Colt M4 Upper Receiver Group? A: The receiver is forged from 7075 aluminum, black anodized, and the barrel is made from military-grade 4140 chrome-moly steel alloy.
Q: Can the barrel be customized? A: Yes, you have the option to have the barrel pinned and welded for an additional fee for NFA compliance.
Q: What is included in the Colt M4 Upper Receiver Group? A: The package includes a Colt M4 upper receiver, Colt M4 profile 14.5" barrel with A2 flash hider, Colt A-frame front sight base, Colt dual insulated hand guards, Colt screw-on carry handle, and Colt front side-swivel sling mount.
Q: Is there any specific marking on the receiver? A: There is an M4 marking at the front of the receiver. The upper receiver comes without "C" or CAGE Code markings.
Q: Is the product new? A: The Colt M4 Upper Receiver Group ships in sealed plastic with oil, milspec clear plastic. Most of these parts are taken off new rifles, and some come as new parts directly from Colt. So, yes, this is new. The barrel was most likely test fired.
Q: Does it come in a factory box? A: No, the Colt M4 Upper Receiver Group does not ship in a factory box as most items are taken off new rifles.
Q: What is the chambering of the Colt M4 Upper Receiver Group? A: The barrel of the Colt M4 Upper Receiver Group is chambered in 5.56 NATO.
Q: What is the twist rate of the barrel? A: The Colt M4 Upper Receiver Group features a barrel with a 1:7 twist.
Q: What type of front sight base does the Colt M4 Upper Receiver Group have? A: The Colt M4 Upper Receiver Group has a Colt A-frame front sight base - a new version without an "F" mark, but is F-marked sized.
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