So like the title says, Im having issues with my M&P15-22. Ive put probably 1500 flawless rounds through this rifle so far but when I took it to the range today is wouldnt chamber a round. The bolt carrier seems like it is rubbing and getting hung up. If i pull the charging handle back and slowly release it when it gets about half way though the "window" it will get stuck. Has anyone ever had this issue with theirs? Im am completely stumped on this one. And yes it is clean. I clean it after every outing with it. I took a look inside it and nothing looks wrong. Any help with this is greatly appreciated.