For my well ridden used norinco i purchased the new 1911/45acp 5'' barrel from sportsmans guide for $59 and the new national match IAI barrel bushing from CDNN investments. I'm a big spender right? I did all the fitting myself and its accurate and functions awesome and she shoots one clover leaf per mag no matter who shoots it. And i haven't tightened the slide to frame fit yet. But soon i will, i have most of the tools now. CZY