5.56mm NATO caliber; Barrel: 16" 416R Stainless with 1:7 twist; Individual serialized barrel for QC purposes; Hand polished Noveske Match Chamber; Mid length gas tube system; M4 barrel extension with extended hand polished feed ramps; 1/2"x28 muzzle threads with an A2 birdcage flash hider; Upper Receiver - Noveske Chainsaw forged upper receiver from 7075-T6 aluminum with extended feed ramps; Hardcoat type III anodizing; Black nitride Noveske marked forward assist; Lower Receiver - Noveske Chainsaw forged lower receiver from 7075-T6 aluminum; Flared magazine well; Magpul enhanced aluminum trigger guard; Hardcoat type III anodizing; GEN 4 NSR-15" (M-LOK) Free Floating Handguard; Featuring M-LOK mounting positions every 45 degrees with picatinny 1913 top rail; ALG Defense Advanced Combat Trigger