Strike Industries MCQUAD Micro Threaded Compensator Black Steel 0.89" OAL Compatible W/ 9mm/357 Sig The Quad Is a Pistol Compensator From The Strike Micro Threaded Comp Can Work With Just About Any Size Slide using a Threaded Barrel With 1/2"X28 Threads Per Inch. The Wide Front Wall Baffling redirects Gas To Mitigate Felt Recoil And Reduce Muzzle Rise. Made From S45C Steel With HRC40-45 Heat Treatment And a Black Oxide Finish, The Strike Micro Threaded Comp Quad offers a smaller Threaded Barrel Compensator. Model: Micro Material: Steel