Radian Weapons Glock 19 Gen 3 9mm RAMJET Barrel w/ AFTERBURNER Compensator 4.4in 1-10 Twist DLC Finish 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. Specifications for Radian Weapons Glock 19 9mm RAMJET Barrel w/ AFTERBURNER Compensator: Manufacturer: Radian Weapons Fabric/Material: 416R Stainless Steel Caliber: 9mm Luger Gun Make: Glock Barrel Length: 4.42 in Threads per Inch: Non Threaded Additional Features: Standard Gun Type: Pistol Length: 4.4 in Features of Radian Weapons Glock 19 9mm RAMJET Barrel w/ AFTERBURNER Compensator: Engineered specifically to run 124 grain and heavier 9MM ammunition Package Contents: Radian Weapons Glock 19 9mm RAMJET Barrel w/ AFTERBURNER Compensator What firearm models does the manufacturer say Radian Weapons Glock 19 9mm RAMJET Barrel w/ AFTERBURNER Compensator is compatible with? The manufacturer suggests that Radian Weapons Glock 19 9mm RAMJET Barrel w/ AFTERBURNER Compensator is compatible with Glock 19 Gen 3 Glock 19 Gen 4 Glock 19 Gen 5Radian Weapons G19G3-IL-RN: Afterburner Ramjet INTRA-LOK Combo Gen 3 Black