Aimfiree QD Quick Release Mount Adapter 4 Slots Riser Scope Mount Fit 20mm Picatinny Weaver Rail

It's okay. I use it as a clamp-on adapter for a brass catcher bag that somehow won't work on a non-picatinny rail. So, I use this a sort of an adapter. It would be okay, I think, as amount for an inexpensive red-dot sight. Tolerances aren't really good enough to bring you back to the same point of aim if removed from the weapon, but good enough for what I am using it for. Took FOREVER to arrive.

It arrived quickly and after looking it over I suggest you take the two bottom screws and put some lock tight on them as they were not factory tightened and seemed like they would loosen up without it. Other than that it works nicely with my red dot to give just enough height to cowitness as I wanted.

Decent quality and no attachment issues. I bought it for a RMR to mount to my AR to cowitness and it works well for that. My biggest beef is that it is not centered with the rail it attaches to!

Used this to replace my Zengi 3 slot quick release.This one is much better. Stays tight during firing. I ran over 100 rounds thru the pistol and this one worked great withmy red dot sight.

The level does not lock down like it's supposed too. The lock was not machined square enough to set.

When mounted is misaligned with the rails on the upper. Cheap. May use for a bipod ad but not for any optic or sight.

I bought two of these for my nikon scope and everything fit and it tightens down and locks in place like I wanted but after getting it mounted, I noticed a major offset. The top rail does not line up with the bottom mount. Very disappointing because it seems this is the only one that locks the lever.

took some adjusting to make it tight. Be patient and a good gunsmith and it works very well!