CGS SUPPRESSORS CGS-QUBE-Metric Qube Metric Black Stainless Steel The Official Qube Compensator Is The First Pistol Compensator That doesnt Require Set screws.The Compensator Mount Threads Onto The Barrel First And gets torqued Down With a Wrench. The Official Qube Compensator Body slides Over The Top Of The Compensator Mount And shoulders Against a Taper. The Lock Nut Threads Onto The Compensator Mount And pinches The Official Qube Compensator Body Against a Second Taper And Locks It Down Which prevents Rotation. Model: Qube Material: Stainless Steel Finish: Black