Take ur time - Leapers UTG .22/Airgun to Picatinny/Weaver Low Pro Snap-in Adaptor

The rails on my rifle are 13.5mm.
mounts for this are expensive and the ones avail are way high. I like to mount as close to center bore as possible, now I can use picatinny low mount rings.
This adapter stretched to fit and does include small stop pins to fit in receiver holes of an air rifle, however when you tighten the rings to rail, they want to collapse down raising the sides, so you have to adjust their scope stop pin to keep it square/level with your scope ring bracket(pushes up), then tighten securely and they do not budge, the 2 sliding rails of the adapter also tighten/lock with a very small size allen wrench after you have the rings tightened to base. The rings centered exactly and would do so on a 11mm as well by design. Whether they hold up depends I think on the strength of the rings holding/clamping them on.
Pros: centers exactly
Cons: adjustment time, weak link

This review was written in the old system and had content requirements that are different than reviews written today.