VeilStrike 4″ Matte Black 1/2″x28 Muzzle Brake Extension Tube for GBB
✅Why Choose VeilStrike?. (1)5″ Extension Tube. End Cap Exit Bore: 5/8″ (16mm). Finish: Level 3 Hard Anodized Coating for superior wear and corrosion resistance. (1)Soft Tip Set Screw. (1)Thread Locker (for secure installation).