I have a registered full auto Colt lower that I use with an assortment of different upper receivers. One thing that I've noticed when others are shooting it who are new to full auto is that they often do not get on it enough to properly manage the constant stream of recoil. The result is that many of their shots tend to go high. I'd like to start them off with a 22LR conversion in full auto if it will run reliably. I know the CMMG 22LR conversion is popular. Will it run full auto? I looked on CMMG's website, but it doesn't specify. If it doesn't run full auto out of the box, can it be modified to do so? I'm also open to just buying a complete 22LR full auto upper half if there's one that works reliably.