Looking to get a bit more control over your 9mm Glock®handguns? Want faster follow-up shots? Adding an Agency Arms 417 Compensator to your Glock®Gen 3 or 4 handguns enables owners to do more with their guns, thanks to a unique design. Machined from 7075 aluminum, the Agency Arms 417 Compensator fits all Gen 3 and Gen 4 models of the Glock®G17, G19 and G34. The muzzle device features a two-chamber design, featuring two vertical ports as well as two ports that vent off to the side. Options are available with both black and gold finishes. For installation, the Agency Arms 417 Compensator ships with the set screws needed, and owners can continue using their OEM recoil-spring assembly. The device requires a threaded barrel with a 1/2-28 TPI thread pitch. Another added features of the Agency Arms 417 Compensator is a machined hole compatible with all Glock®front sights, allowing users to enhance their sight radius.