I have an AR22 Aero Precision build with the CMMG barrel/bcg combo that I made for my 10-year-old daughter to go shooting with me. We keep having issues with it not cycling properly or not resetting the trigger. A lot of the rounds get sheered on the sides also, and I find small metal shavings here and there.

Any ideas on what is causing this and how I can remedy the situation? When I take her shooting I want her to have a good time and not get frustrated by constant issues. Thanks!