Glock 21 Gen4 Threaded Barrel .578x28

Glock 21 Gen4 Replacement Barrel Features Machined from high-quality steel the barrel delivers consistent accuracy and long-term durability under regular use and cleaning cycles. The black finish improves corrosion resistance and helps retain a factory appearance even after extended service. The threaded muzzle (.578x28) accepts compensators brakes or suppressors to allow recoil management and customization for improved follow-up shots. Designed for straightforward installation this barrel fits standard Glock 21 Gen4 components and requires no modifications to slide or frame. Whether replacing a worn factory barrel or adding threaded-muzzle capability this barrel offers dependable fitment and performance for duty competition and range use. Glock 21 Gen4 Replacement Barrel Specifications Brand: Glock Model Fit: Glock 21 Gen4 Category: Handgun Barrels Caliber: .45 ACP Material: Steel Color/Finish: Black Thread Pattern: .578x28 Function: Replacement barrel and threaded muzzle upgrade Application: Duty defensive competition and range use