The 417 Gen 5 Single Port compensator is a thread on compensator designed for select Glock Gen 5 models. It features a 1 chamber design (1 vertical venting port). It is designed to work with threaded barrels with a 1/2x28 thread pitch (Overall barrel protrusion should be 0.715in +/- 0.005in for optimal fitment). It features a front sight hole allowing you to transfer your existing front sight from your slide to the compensator. It is compatible with the G17, G19, G19X, G34, and G45. (Not compatible with conversion barrels). Please note compensator may require tuning of the recoil system. It is designed to work with most factory loaded ammunition but will yield the best results with a heavier charged ammunition.