The Agency Arms 419 Compensator is a high performing and uniquely designed component for Sig P320 pistols. The 417 Compensator is precision machined from high quality aluminum and features a seamless 1/2"-28 thread design. The 417 Compensator helps to disburse gases away from the shooter creating enhanced control over the firearm. The 417 Compensator is a great choice for anyone serious about upgrading their Sig pistol! The Agency Arms 417 Single Port Compensator is threaded with the standard 1/2x28 thread pitch (Overall barrel protrusion should be 0.715" +/- 0.005" for optimal fitment). It features a single top venting port and it also features a front sight hole. It features a front sight hole, allowing you to transfer your existing front sight from your slide to the comp.