AR-15 Complete Upper M-LOK 5.56 W/ 5-Pk 30-Rd PMAG

This Brownells’ exclusive Complete AR Upper Receiver is Made in the USA.  Chambered in 5.56x45mm NATO and featuring a 16” barrel with a 1:8 twist.  The standard A3 13-slot aluminum flat top receiver comes with a 10” handguard utilizing the M-LOK rail system.  A low profile gas block, bolt carrier group,  charging handle, forward assist, ejection port cover and phosphate finish help to complete this outstanding package.  This complete A3 upper receiver will attach to almost any standard AR-15 lower receiver.

The receiver is being paired with 5 Magpul PMAGs for even better savings! Exceptionally rugged, combat- and competition-ready magazine functions flawlessly, even when left fully loaded for extended periods. Corrosion-proof, self-lubricating one-piece body of fiber-reinforced, molded polymer has no spot welds or joints to impair the follower, and the constant internal curve ensures smooth, unobstructed movement of the round stack. Anti-tilt follower stabilizes the stack to help prevent nose-diving and bolt-over-head failures. Heat-treated, stainless steel spring is stress-relieved for optimal performance. Withstands the heat from prolonged full-auto fire and is not harmed by most bore cleaners and solvents. Exterior ribbing provides added gripping surface; magazine catch notch, rather than a traditional hole, keeps dirt and debris out. Easy-to-grasp ledge on floorplate aids in extracting magazine from pouches; floorplate removes easily for cleaning. All models available in Black. DO NOT COME WITH DUST COVERS.

The BCG is the M16-style BCG. It will not work with older Colt lowers that have the sear block.