Nay, it was put together right. Just put all the factory parts back in and test fired a couple of magazines and it locked back on the fifth round every time. Wondering if it could be the mag springs? I keep two loaded with 12 rounds each since it's my primary carry gun. Might have to fall back on the .357 snub nose I have. It's only a five shot gun so I'm no worse off with the Glock until I get some new mag springs. They've had a couple thousand rounds through them and always been loaded.