Radian Weapons Glock 17 Gen 5 9mm RAMJET Barrel w/ AFTERBURNER Compensator 4.9in 1-10 Twist Black RO839. 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 17 9mm RAMJET Barrel w/ AFTERBURNER Compensator: Manufacturer: Radian Weapons Caliber: 9mm Luger Fabric/Material: 416R Stainless Steel Threads per Inch: Non Threaded Gun Make: Glock Gun Model: Glock 17 Gen 5 Length: 4.9 in Additional Features: Standard Condition: New Barrel Length: 4.42 in Gun Type: Pistol Features of Radian Weapons Glock 17 9mm RAMJET Barrel w/ AFTERBURNER Compensator: Engineered specifically to run 124 grain and heavier 9MM ammunition Package Contents: Radian Weapons Glock 17 9mm RAMJET Barrel w/ AFTERBURNER Compensator What firearm models does the manufacturer say Radian Weapons Glock 17 9mm RAMJET Barrel w/ AFTERBURNER Compensator is compatible with? The manufacturer suggests that Radian Weapons Glock 17 9mm RAMJET Barrel w/ AFTERBURNER Compensator is compatible with Glock 17 Gen 5Radian Weapons H0005: Ramjet/Afterburner Combo 9mm Luger Compatible w/Glock 17