I tried to do a search for a thread but didn't find what I needed. I've got a chance to get a RPB M-11 overstamp in .380 at a really good price. It comes with several steel mags that are rectangular not rounded in frount or zylte style. They are stamped with the COBRY signia. Can this be converted to 9mm without changing the mag well? And are there any after market uppers like a Lage Max-31 that can be put on it. Or is just a fun bullet hose? I would post pix but know how. Thanks



