I have the Mark 3 mounted on an AR -15. I purchased the quick release for mounting on a picatinny. After initially sitting in I noticed the two screws which hold the optic to the quick release base had loosened. I recommend they be removed and Locktite applied before mounting on weapon. I have not yet determined this optics ability to hold a zero . Overall I would recommend this scope based on my experience to date.
Pros: easy set up, fairly clear, value
Cons: green illumination is the same regardless of setting
This review was written in the old system and had content requirements that are different than reviews written today.