Radian Weapons Ramjet Ruger RXM 4.5in Non-Threaded Pistol Barrel w/Afterburner Black. The threadless barrel design allows for effortless install/removal for cleaning. 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. Note: Certain municipalities or counties may restrict its use and certain states may restrict usage under some circumstances. Before installation on your firearm we recommend you review your state and local laws to determine whether your use is compliant in your jurisdiction. Specifications for Radian Weapons Ramjet Ruger RXM 4.5in Non-Threaded Pistol Barrel w/Afterburner: Manufacturer: Radian Weapons Finish: Radianite Gun Make: Ruger Gun Model: Ruger RXM 4.5in Barrel Material: 416R Stainless Steel Package Contents: Radian Weapons Ramjet Ruger RXM 4.5in Non-Threaded Pistol Barrel w/Afterburner Tapered screw TORX Bit What firearm models does the manufacturer say Radian Weapons Ramjet Ruger RXM 4.5in Non-Threaded Pistol Barrel w/Afterburner is compatible with? The manufacturer says that Radian Weapons Ramjet Ruger RXM 4.5in Non-Threaded Pistol Barrel w/Afterburner is compatible with Ruger RXM 4.5inRadian Weapons R1133: Ramjet Ruger RXM 4.5in Non-Threaded Pistol Barrel w/Afterburner Black