Agency Arms, 417 Compensator, Features Two Chamber Design-2 Vertical Ports and 2 Side Venting Ports, Front Sight hole, Two Set Screws with an Allen Wrench and a Vial of Rockset are Included in Package, Matte Finish, Black, Fits Glock 17/19/19X/34/45 Gen 5, Standard 1/2 x 28 thread pitch
