Ruger PC 9 mm Barrel Extension Solid Tube Muzzle Brake 1/2x28 TPI,Hard Anodized

Ruger PC 9 mm Barrel Extension Solid Tube Muzzle Brake 1/2x28 TPI Ruger PC Carbine6061 T6 Hard Anodized Aluminum 1/2x28 TPI Barrel Extension Tube Muzzle Brake For 9mm 6061 T6 Hard Type 3 Anodized Finish Aluminum 1/2x28 TPI Barrel Extension Tube Muzzle Brake For 9mm Center Exit Hole Diameter: Dia. " Dia. 11.5 mmit is one solid piece structure.Weight: 11.53 OZCNC Machined High quality aluminum Billet 6061 T6 alloy CNC machined to spec1/2x28 TPI It structured a set screw, only with a L wrench Tool can be tightened and/or removedOverall length: 7.1" 180mm Overall Barrel Length will be extended aprroximately 6.26"Outer Diameter: 1.256"1/2" Crush Washer includedit is One Solid Piece Of Aluminum. * CANNOT Take Apart Or Disassemble * Thread on worked as a 6.5" barrel extension fixed by a set screw and can only be removed by a L wrench Tool.Product Description:This Extension Muzzle Brake is made a one piece solid structure, can not be modified in anyway, it also very easy to clean.the Bore Diameter is 11.5mm, allow Bullet of 9mm, or smaller, simply travels through freely without any hit of its inside wall.This barrel extension can help increase the dwell time/backpressure on short-barreled guns.Knurled Base 1/2-28TPI Type II Hard AnodizedNot designed nor intended to affect sound, May reduce flash a little.Smooth Exterior.Crush Washer included.Tools required: upper vice block.