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.