Radian Weapons, RAMJET, 3.1" Barrel with AFTERBURNER Compensator, 9MM, DLC Finish, Bronze and Black, INTRA-LOK Mounting System, Fits Sig Sauer P365 AFTERBURNER Compensator is Machined from Hardened Stainless Steel RAMJET Barrel Machined from Hardened 416R Stainless Steel INTRA-LOK Mounting System uses the Taper Lock Principle Angled Front Faces on the AFTERBURNER Aid in Holstering Fits Sig Sauer P365 and P365X with 3.1" Slide The Radian AFTERBURNER plus RAMJET combo provide unprecedented recoil reduction and match grade accuracy in a concealed carry package. The threadless barrel design allows for effortless install/removal for cleaning. INTRA-LOK allows the user to simply slide the compensator over the barrel, insert and tighten the locking screw, making for a simple and repeatable installation process. This system allows the user to easily remove the barrel from the slide for cleaning.