The HM Defense Complete Threaded AR-15 Upper Monobloc chambered in 5.56mm is a fully assembled, ready-to-install upper built around a patented threaded MONOBLOC system. It pairs a match grade premium button-rifled 16 inch barrel with a mid-length gas system and 1/8 twist for reliable performance, while the 1/2-28 threaded muzzle is finished with a precision CNC machined muzzle brake.
Key Features
12 inch Picatinny rail for optics and accessories plus MLOK attachment system on the sides and bottom
Patented threaded MONOBLOC monobloc receiver design for a secure, precision fit
Fully assembled AR-15 complete upper including charging handle and complete bolt carrier group
1/2-28 threaded muzzle with a precision CNC machined muzzle brake
Mid-length gas system with 1/8 twist for stable, consistent cycling
16 inch match grade premium button-rifled barrel chambered for 5.56mm NATO / .223 Rem
Built on a 7075 forged, Type III hard coat anodized upper receiver, this HM Defense monobloc threaded upper is designed for fast installation on your lower.
