RH Threaded Barrel G21 Gen4 & Gen3 Models Only

G21 Gen4 .578X28 Right Handed .45 SAE Threaded Barrel with metal Thread Protector Note: Not compatible with the G21 Gen5 MOS model. Made for the .45- caliber GLOCK 21 Gen4 pistol, the threaded barrel can support a compensator *Thread protector included * .578 x 28

Note: Threaded barrels are defined as "assault weapons" pursuant to the laws of California, Connecticut, Delaware, District of Columbia, Illinois, New York, and Washington and may not be sold to commercial customers in these states.