Radian Weapons Ramjet-Afterburner Pistol Compensator SIG Sauer P365 and P365X 9mm Non-Threaded Pistol Barrel 3.1in Black/Grey. The AFTERBURNER compensator is machined from hardened stainless steel and the RAMJET barrel from hardened 416R SS; both are enhanced with a Radianite coating. This combination achieves low friction high hardness and high corrosion resistance making overall durability and erosion from muzzle blast a non-issue. Angled front faces on the AFTERBURNER aid in holstering. The INTRA-LOK mounting system uses the taper lock principle; a tapered locking screw interfaces with an angled V-groove on the underside of the barrel. This perfectly times the compensator as it locks down onto the upper barrel profile on the muzzle end of the barrel. 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. Specifications for Radian Weapons Sig Sauer RAMJET Pistol Barrel w/ AFTERBURNER Compensator: Manufacturer: Radian Weapons Fabric/Material: 416R Stainless Steel Caliber: 9mm Luger Gun Make: SIG Sauer Threads per Inch: Non Threaded Additional Features: Standard Condition: New Gun Type: Pistol Package Contents: Radian Weapons Sig Sauer RAMJET Pistol Barrel w/ AFTERBURNER Compensator What firearm models does the manufacturer say Radian Weapons Sig Sauer RAMJET Pistol Barrel w/ AFTERBURNER Compensator is compatible with? The manufacturer suggests that Radian Weapons Sig Sauer RAMJET Pistol Barrel w/ AFTERBURNER Compensator is compatible with SIG Sauer P365 SIG Sauer P365X SIG Sauer P365 XL SIG Sauer P365 X-Macro (Non ported factory slides ONLY)Radian Weapons R0876: Ramjet-Afterburner Pistol Compensator SIG Sauer P365 3.1in Black/Grey