The Billet-AR upper receiver set is 100% machined in the USA and was engineered from the ground up to address structural design weaknesses in standard USGI receivers and enhance overall tolerances. It has a precise bolt raceway for smoother chambering, more rigid receiver walls to reduce firing flex. The Billet-AR upper receiver is CNC machined from 7075-T6 aerospace aluminum billet stock with a top Picatinny rail, M4-style extended feed ramps, and smooth side profile without forward assist for maximum accuracy potential.
TRUPPERBIL
