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
- Requires FFL:
- True
