I have an AR15 with a CMMG .22 conversion kit. I tried it and well, uh, er, it failed miserably, failing to feed every other round.
The unit is going back to CMMG for warranty work, but I am rethinking my choice. Would it be better to just purchase a whole .22 upper instead of the conversion kit? One of the disadvantages of that is my AR15 is all decked out with an Eotech red dot, Magpul iron sites, and a Daniel Defensive Omega rail. I would not have that on a new .22 upper. On the other hand, if the conversion kit does not work, what good is it?