Handguard - 10" Hardcoat Anodized Slim Hybrid Mlok Free Float (rails may have variations in design based on stock availability, the same excellent quality)
Gas Block - .750 Low Profile steel gas block, hardcoat anodized; carbine gas system
Upper Receiver - A3 Flat-Top Upper, made from certified 7075-T6 aluminum forgings. Black hardcoat anodized to gov. specs; assembled with forward assist and dust cover