Aim Sports Tactical 45 Degree Offset Picatinny Mount

"Used for paintball because paintball hopper is in the way of any good sights to put on the rail. Don't worry I also buy these things for airsoft.

"I bought this item in hopes of mounting a red dot sight offset in order to compensate for a full face mask while looking sight.

Worked reasonably well. I had a flip up style scope protector so purchased two rails. Glad I did, because the full sized red dot takes up pretty much both rails and even took some extra adjustment to get them both on. If you're running a medium or smaller reflex/red dot, 2 rail makes everything easier anyway and better to have one than need one when your local shops don't can't provide...