I use this with an ATN PS22 on a Leupold VX3 scope with 50 mm objective lens. The device is easy to use and provides one the ability to mount the NVD on different weapons as long as the scopes' objective lens are the same size (or close). This mounting system provides a solid and stable connection between the NVD and the scope. The only down side is that the mounting device relies on plastic ring-shaped inserts to clamp down securely on the objective lens. These rings are split and tend to coil up as you place the proper one in the inner part of the mount. I found it challenging to mate the mount to the scope in under three tries because the insert ring would coil on me as I slid the mount onto the scope. I think I'm going to try some double sided tape to secure the insert ring to the mount - that should make the process of mating the mount to the scope a quick and easy process.
Good product and we've had no trouble with it after firing over 100 rounds with the NVD mounted to the scope using this device.
Pros: Easy to use; can be used on multiple weapons with same scope objective lens size
Cons: Expensive; uses plastic ring inserts that are easily dropped in the dark; ring inserts are split and have a tendency to coil inside the mount making it difficult to mate to the objective lens
This review was written in the old system and had content requirements that are different than reviews written today.