Somebody mentioned in here that they carried thier 40c with out one in the chamber but with a loaded mag. I tried that today and it didnt work. I loaded up the magazine. Had the slide in the forward ready postion. (not open or locked).Inserted the mag, But the magazine wont lock in. The slide needs to be open and locked for the mag to catch and stay in place, so it seems. Is there a way around this? I'm new to the gun.