I've had my MIni 14 for about 18 months and it's been just great, until last week. After the first few rounds out of a mag it would either try to load 2 rounds at once or load a ruound but nothing would happen when I pulled the trigger. I have tried 2 different 30 round Ruger mags, 2 20 rounders and a couple of 10 round. All do the same. Whe it chambers a round but doesn't fire I work the bolt, eject a good round (no strikes on the primer) and it will then fire. Reload that round and it fires. Other times the bolt jams because it trying to feed 2 rounds or 1 get hung up. As I said, this just started happening all of a sudden. BTW, I use nothing but factory ammo.