Give the Vortex StrikeFire a shot, I love it, solid and built to handle the recoil of a AR 5.56. So you should have no issue on a 22lr. Plus they have a warranty that is the best in the market. It is $149 on Amazon with a mount. You can co-witness 100% or based on the mount you get, 1/3 Co-witness (what I've got on my ARs). Buy a Red Dot once, this is the best value Red Dot I've found that works. Got a box of cheap ones that look good in the shower.. Good luck.