Shaw Ruger 22LR Threaded Rifle Barrel 16.5in Factory Profile 1-9 Twist 1/2-28 Thread Matte Blued. Heavy .920" bull profile with Bentz style target chamber for increased accuracy potential. Muzzle threaded for suppressor or other device. 1-9" fast twist for use with heavy subsonic ammunition. Specifications for Shaw Ruger 10/22 22LR Threaded Rifle Barrel: Manufacturer: Shaw Color: Steel Finish: Matte Caliber: .22 Long Rifle Barrel Length: 16.5 in Barrel Profile: Contour Threads per Inch: 1/2x28 Barrel Twist Rate: 1-9 Barrel Material: 416R Stainless Steel Flutes: No Gun Make: Ruger Gun Model: Ruger 10/22 Gun Type: Rifle Weight: 1.6 lb Features of Shaw Ruger 10/22 22LR Threaded Rifle Barrel Drop-In Barrel upgrade for the Ruger 10/22. Heavy .920in bull profile with Bentz style target chamber for increased accuracy potential. Muzzle threaded for suppressor or other device. 1-9in fast twist for use with heavy subsonic ammunition. Package Contents: Shaw Ruger 10/22 22LR Threaded Rifle Barrel Thread Protector What firearm models does the manufacturer say Shaw Ruger 10/22 22LR Threaded Rifle Barrel is compatible with? The manufacturer suggests that Shaw Ruger 10/22 22LR Threaded Rifle Barrel is compatible with Ruger 10/22Shaw 1022FCM16TM-FT: Ruger 10/22 22LR Threaded Rifle Barrel 16.5in Factory Profile 1-9 Twist 1/2-28 Thread Matte Blued