I have taken my MP 15-22 out the last couple of weekends and I have had a couple of problems. First off, on several occasions, when I pull back to load the first round, the slide doesn't close all the way causing me to have to re-slide and eject the live shell. Also, today, my first round in the clip wasn't going off. The hammer would hit the round and leave a mark but wouldn't fire. This can be dangerous and it concerns me. After I ejected the first live shell, the rest feed through fine. I was just wondering if anyone else had this problem. I have had the gun for a few months now and I'm not sure how to fix this. Thanks for any help!