I have a CMMG .22 AR, it is great. There is only one brand magazine that gives me any issues and that is the ProMag. I have put numerous rounds through the standard CMMG magazine and four after market magazines. I do prefer the Black Dog mags with metal lips. But honestly this rifle is a dream to shoot, and throw a suppressor on it, and the thing is whisper quiet. Mine has a 14.5" exposed barrel(1.6" inside the upper, to bypass NFA laws). I would recommend it to anyone. I also owned a S&W M&P15-22, it was a great rifle too. I only sold it to buy the CMMG.
" The strongest reason for the people to retain the right to
keep and bear arms is, as a last resort, to protect
themselves against tyranny in Government...." - Thomas Jefferson