Too many problems! - CMMG, Inc 22LR AR Conversion Kit, Bravo, Left Hand

I bought this kit because of all the positive reviews, but was very dissapointed. My first issue was trying to fully load the mags. I contacted CMMG and asked why I could only get about 10 - 12 rounds in before they would jam. I was told to take the mags apart and sand down the high spots, which I did. After sanding and greasing it that helped, but I still had problems loading hollow points. I ask about the different ammo I was trying to use and was told they would all work. Then when I got to the rangs using LRN 1075 FPS ammo only, I had many FTF's and light strikes. I did find a 1225 FPS ammo that worked, but the round would drop about 2-3 inches @ 50 yards. My AR15 has an Anderson Arms lower with a mil-spec trigger.