18 416 SST Barrel – 15.5 M-LOK Handguard – Butcher Muzzle Brake – .750 Superlative Arms Adjustable Gas Block – Rifle-Length Gas System – High Pressure Nickel Boron BCG – CMC 3.5lb Single-Stage Flat Trigger – Billet Upper/Lower Receiver – Magpul ACS Adjustable Stock – Ergo Suregrip