The Agency Arms 417 Compensator for Glock Gen4 BL is a precision-machined muzzle device designed to tame muzzle rise while preserving reliable cycling, featuring a standard 1/2x28 thread pitch and a single top venting port for controlled recoil management. This compensator is engineered to utilize the OEM recoil spring assembly, maintaining familiar handling and maintenance routines, and it includes a front sight hole that allows you to transfer your existing front sight from your slide to the compensator for a seamless setup. Built to accommodate Glock 17, 19, and 34 platforms, it pairs cleanly with Agency Arms Gen 4 configuration for a cohesive, aftermarket upgrade without sacrificing fit or function. The package includes the 417 Comp specific to Generation 4, two set screws with an Allen wrench, and a vial of thread locker to ensure a secure, long-lasting attachment. Finished in black for a discreet, professional look, this muzzle device complements the pistols silhouette while delivering practical performance improvements in rapid-fire scenarios and competitive shooting alike, making it a reliable upgrade for shooters seeking enhanced control and accuracy.