I bought this about a year ago for my Airsoft guns worked great for that. I decided to put this on my Dpms Tactical recon Ar-15 and within 100 rounds the lens with the polishing on the front popped out of its socket inside the sight. Full shock proof... Yea right, im getting my money back, if your smart you wouldn't buy this or at least dont put it on anything more than an airsoft gun or .22
Pros: Non, its garbage.
Cons: Everything.
This review was written in the old system and had content requirements that are different than reviews written today.