Backup Tactical Glock 48 9mm Threaded Barrel 1/16 Twist Rate 1/2x28 Thread Black. Its super quiet with all the great compact and many cans on the market. Specifications for Backup Tactical Glock 48 9mm Threaded Barrel: Manufacturer: Backup Tactical Color: Black Fabric/Material: 416 Stainless Steel Threads per Inch: 1/2x28 Barrel Twist Rate: 1-16 Caliber: 9mm Luger Gun Make: Glock Gun Model: Glock 48 Features of Backup Tactical Glock 48 9mm Threaded Barrel Pulled-Broach Rifling SAAMI Spec 9mm Package Contents: Backup Tactical Glock 48 9mm Threaded Barrel What firearm models does the manufacturer say Backup Tactical Glock 48 9mm Threaded Barrel is compatible with? The manufacturer says that Backup Tactical Glock 48 9mm Threaded Barrel is compatible with Glock 48Backup Tactical G48TB-BLK: Glock 48 9mm Threaded Barrel 1/16 Twist Rate 1/2x28 Thread Black