At the range the other night and i was sighting in my brother in laws m&p 15-22 and the red dot scope he put on it. after I got finished and handed it back to him he shoots it once and say "fuck! why does it keep jamming?!?!" I walk over and look at it and he tells me it th last shot felt really weird cuz he got alot of gas in his face. I take it from him and disassemble it to start going over it and his is what I find.... The casing actually split in half and part of it was still stuck in be barrel. This was all after he was giving me shit about spending a little extra on the big box of federal 22 cal over the blazer. Again cheaper isn't always better. He also had about 20 or more rounds that failed to fire or wouldn't feed because of manufacturing defects.