Check the listing for details. 223 5.56 Competition Muzzle Brake Compensator 1/2-28 TPI Punisher Comp Washer. Condition: New. Listed at 44.99 USD. Specifications: .223/ 5.56 NATO / .22 LRThread Pitch: 1/2″ – 28Length: 2.309″Outer Diameter: .998″Diameter At Tapered Flat End: .742″Bore Diameter: .253 (+/-) With A .05 VarianceWeight: 3.7ozMaterials: 4140 Chromoly SteelColor: Matte Black Mag PhosphatePorted At 11 o’ Clock & 1 o’ Clock For Maximum Compensating Effect With 4 Ports2 Large Baffles Angled Rearward For Action/Reaction Recoil Reducing Effect3 Gun In Mind Designed CompWorks On A Variety Of Bolt Actions Threaded In 1/2-28 Such As Remington 700, Savage Model 10, Howa 1500, Tikka T3 Lite, Mossberg MVP, Ruger American Rifle, Etc.Works On Threaded Ruger 10/22, Mossberg 715 Tactical, Remington 597, Marlin 60, Marlin 795, Etc.Crush Washer Included Proudly Machined In AmericaLaser Engraved On Both Sides With: EVIL PUNISHER LOGO And Thread Pitch, Caliber, And Site Shipping/Payment All parts ship US Postal Service within 24 hours of receiving payment except Sundays when the post office is closed.