The Agency Arms 417 Dual Port Compensator is a high performing and uniquely designed component for Glock 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 Glock pistol! NotesInstallation - Thread the 417 compensator onto your threaded barrel and ensure it is timed flush to the slide. Install recoil spring guide rod making sure it fits securely in the compensator guide rod channel. Treat set screws with thread locker and tighten. Finally, check the guide rod for secure fitment in guide rod channel. Includes417 Dual Port Comp 2 Set Screws with an Allen WrenchVial of Thread Locker DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this pro...