Sightron Red Dot S33-DST

Another gun show find....Sightron S33-DST 33mm red-dot tube type scope with a very crisp round 3, 5 and 10 MOA dot, made in Japan. the dot size control is somewhat unusual. Can't find anything on the net on this particular model, but at the price point it came home with me anyway. Came with rings and a Weaver type B-Square mounting rail. Not sure what gun the rail fits, but I'm sure the many experts here will probably know....LenV (on the scope)? Maybe the rail is for a springer type airgun based on the pin and detent on the underside of the rail?

Pics of the Weaver mount...

Hi Tony,  I have two Sightron S-33. The Mil-spec is one of most robust I've ever seen and mounted it on a mini 14. The S33 4R is just plain big. I did not trust the rings it came with to hold up under recoil so I ended up mounting it on a Ruger 10/22. I was never able to find 33mm rings to my liking. I am not familiar with the model you purchased but I'm certain it will be an asset somewhere. You probably noticed neither of mine ended up on a pistol.