I was worried after some of the other reviews. I put this on an hk 22lr mp5 by umarex. there is no kick on this gun so ifigured why not. This little red dot is perfect. very sturdy aluminum construction 4 different recticles and green./red select. 3 brightnesses. all work well and the batt life is very good. I left it on after mounting it by accedent and at the range 3-4 hours latter it was still fine. 3-4 more range visits latter first batt still going.
it was easy to zero and held zero very good. i would imagine soe of the issues others had were with shot guns or something with more kick.
Pros: Very in expensive
Cons: have not found any
This review was written in the old system and had content requirements that are different than reviews written today.