20 416 SST Teflon-coated Barrel - 15.5 M-LOK Handguard - .750 Superlative Arms Adjustable Gas Block - Rifle-Length Gas System - High Pressure Nickel Boron BCG - Billet Upper/Lower Receiver - Luth-AR Skullaton Rifle Stock - Magpul MOE Grip
Determined at checkout.
