- Posts 1
Last Activity:04-17-2013 10:32 PM
Posted in thread: colt large pin upper on a milspec lower issues on 04-18-2013 at 02:32 AM
probably just going to try to find a milspec upper receiver and sell off the colt upper
receiver, fix the issue for good.im looking for a colt A2 front large pin upper if you are ever
interested in le...