I've had a Trijicon RMR on an M&P Core 9mm for 4000 rounds now, no trouble. Also on a Glock 19.
The .22 will not phase them at all.
Burris Fastfire II I had one replaced by Burris (excellent customer service; they replaced it even though I bought it used). It now resides on my M1 Garand. Holds up fine.