The Swenson National Match Barrel Bushing is a high quality replacement component designed to strict specifications of your 1911 Government Pistol. Swenson 1911 parts are reliable and withstand the stress of constant use to keep your pistol functioning. Choose Swenson parts when customizing your pistol or replacing worn or broken parts. Part may require fitting to your specific gun. FeaturesMilitary spec GI national match 1911 bushingHeld to a tighter tolerance than a production GI Mil-Spec bushingO.D. is .6985"I.D. is .577"Face is engraved: "NM7267718"