The adaptor only accepts two fine threads into the PS-22 body. It also is not designed to tighten to a spot where the PS-22 is in an upright position. The product service people at ATN and Planet Optics did not understand how to use the adaptor. There was no instruction book with the adaptor. The instructions for the adaptor came with the PS-22 and they were not very detailed. Most specifically instructions about the small plastic stopper ring located at the thread end of the adaptor. It would probably be better to use the extended rail setup for an AR15 and not have to worry about the very expensive night vision becoming detached. There also needs to be a better explanation about sizing the adaptor to a scope.
Cons: This adaptor is way overpriced. No instruction manual. Very little sizing information.
This review was written in the old system and had content requirements that are different than reviews written today.