Walther Q5 Match Steel Frame Pistol Barrel5.5 inch 9mm 1/2x28 Thread. Comes with recoil spring for increased reliability when using with a suppressor. Specifications for Walther Q5 Match Steel Frame Pistol Barrel: Manufacturer: Walther Color: Black Fabric/Material: Steel Barrel Length: 5.5 in Threads per Inch: 1/2x28 Caliber: 9mm Luger Gun Make: Walther Gun Model: Walther Q5 Match Condition: New Package Contents: Walther Q5 Match Steel Frame Pistol Barrel What firearm models does the manufacturer say Walther Q5 Match Steel Frame Pistol Barrel is compatible with? The manufacturer says that Walther Q5 Match Steel Frame Pistol Barrel is compatible with Walther Q5 MatchWalther Arms 2835231: Q5 Match Steel Frame Pistol Barrel5.5 inch 9mm 1/2x28 Thread