Ar-15/m16 Billet Upper Receiver

The AR-15/M16 Billet Upper Receiver from Cross Machine Tool Co., Inc. is a precision CNC machined component designed for shooters and armorers who demand tight tolerances and repeatable accuracy. This upper receiver is essential for the assembly of your rifle's barrel and bolt carrier group, which are critical for reliability and point-of-impact consistency.

Manufactured from 6061-T6 aluminum alloy using CNC machining, this billet upper receiver offers superior structural integrity and tighter bore axis alignment compared to forged or stamped variants. The precision machining process eliminates voids and inconsistencies, enhancing durability under sustained fire and thermal cycling. It also ensures reliable rails for optic mounting and consistent breach face geometry, both essential for function with quality bolt carrier groups.

Compatible with standard AR-15 and M16 lower receivers, this upper receiver is suitable for law enforcement builds, military applications, and civilian defensive systems. Weighing 0.55 lbs, it provides the strength-to-weight ratio that tactical and sport shooters require without unnecessary bulk. Installation is straightforward, requiring no special tools as the upper receiver simply pins to your lower receiver.