Recommend with caveats. - Lion Gears Tactical Picatinny 0.5" 12-Slot Quick Release Riser Mount

I wanted to make a dot-plus-magnifier setup quick detachable. This was the lowest long QD Picatinny riser I could find.

It works now but I had to put a lot of effort into it. The portion below the rail on either end, opposite the side with the levers, was too wide. The clamping mechanism didn't have enough travel to clamp onto the rail. It had to be filed down a lot before it would clamp onto a Picatinny base. I mean I had to take off a LOT of metal. The Picatinny base to which I attached it is out of spec, as most of them are--but it's 0.844" wide where spec is 0.833", so it isn't a case of the QD mechanism not clamping down on a rail because it was too narrow.

And then less than 200 rounds of .22 made the nuts vibrate loose and unscrew themselves. I had to disassemble it again, clean it, put red Loctite on the threads of the bolts, reassemble it, and set the spacing and the tension before the threadlocker set. Now it clamps on properly and holds properly. I know Picatinny rails aren't always in spec, especially when we're talking about a no-name Chinese scope mount for a 10/22 rather than milspec, and even milspec rails aren't in spec half the time either, once you start measuring. And that's why QD stuff has nuts you have to set in order to set clamp spacing and tension for the rail you're putting it on. I get that this is part of installation and unavoidable. But machining and QC so bad that it wouldn't even clamp onto a rail that was oversize by over .010" is just crazy.

I understand needing a setup like this, though I wish more magnifiers and more red dot risers were QD to start with. I wish inexpensive halfway decent 34mm/35mm QD scope rings were readily available also. I also wish that it were lower than it is, because I didn't want to add any more height than I had to, but that doesn't seem to exist. There are a lot of things I wish for, I suppose.

I got it on sale for under $20, and with the poor quality and all the work I had to put into it, it was still overpriced. If you need something like this for a project, I strongly suggest waiting until it goes on sale.