10mm

I just finished my first build using a 10MM/.40 S&W RIA kit, which unfortunately didn't include the reverse bushing and the ejector pin was faulty, so I put the gun together without the recoil spring, guide rod, and ejector just to get everything else fitted and try some function testing. Upon...

First off, any help greatly appreciated! I've been pondering over this for the past few days now. I'm building a CCO in 10mm and was planning to weld a Briley magwell. Part already in hand, ready to start milling away when I noticed the sear spring slot is almost at the same level with the MSH...