Velocity Defense Compensator for Glock

Compatibility

Modification required

Model

GLOCK 17 Gen 4

Based on

Manufacturer documented

Based on manufacturer documentation or support information.

Requires a THREADED BARREL in 1/2x28. Most of these pistols do not ship with one — check your barrel before buying. The install manual is unusually explicit that pitch and host are SEPARATE gates: "VERIFY YOUR BARREL IS 1/2-28 THREAD PITCH. IT CAN NOT BE INSTALLED ON ANY OTHER THREAD PITCH." AND "EACH BRAKE IS MARKED WITH THE GENERATION AND CALIBER ON THE BACK. THEY MUST MATCH YOUR PISTOL BEFORE PROCEEDING!" plus "DO NOT ATTEMPT TO USE THIS BRAKE ON OR WITH ANY OTHER PISTOL OR CALIBER THAN IT IS MARKED FOR!" RECOIL SPRING: a 13 lb spring is recommended for the G19/19X/45. Seats against the thread shoulder. Not compatible with the Strike Industries Modular Guide Rod. Maker advises against Blazer ammunition.

Check your exact model and part before ordering. Fitment limits