Advanced Armament Corp silencer-ready barrels are CNC machined from 416R stainless steel. Barrels are precisely heat treated for durability and feature a corrosion resistant matte black isonite QPQ finish.
- Make: Glock
- Model: 21
- Caliber: 45 ACP
- Ports: None
- Muzzle Thread Pattern: .578"-28
- Length: 5.12"
- Finish: Black Isonite QPQ
- Kit: Barrel with Thread Protector