Noveske AR-15 N4 SPR Complete Upper Receiver 6mm ARC 18" Barrel NSR-15 M-LOK Handguard Black

This Noveske N4 Complete AR-15 Upper Assembly comes fully assembled and ready to drop onto any standard AR-15 lower receiver. The N4 upper is a precision machined billet receiver from 7075-T6 with extended feed ramps. The upper is finished with Hardcoat type III anodizing, with Cerakote ceramic black coating for the ultimate finish and performance. Additional features include a pinned gas block, a Pig Pen suppressor compatible flash hider, and a shot-peened, MP-tested bolt housed within a Mil-Sp