Helped someone put together his first stripped lower this weekend. I was just going to show him, but he insisted on doing it himself. No problems to report, other than chasing the front detent pin a few times. I really need to buy a detent pin tool. Or use a clevis pin.
This is the second CMMG kit I've tried that the disconnector felt funny the first few times it was cycled. After about 10-15 cycles, it smoothed out. The Armalite and Palmetto kits were smooth from the start.