LONSEL Picatinny Riser Mount, Low Profile Rail Riser Mounts Adaptor with QD Lever Lock Quick Release & 5 Slots Picatinny Rails for Scope Rings Optics Sights, 1/2" H x 2.5''L

Excellent fix for swapping your scope. Used on low caliber rifles.

Good stuff

I'm just going to say, "It's O.K."... I have not used it yet, but, at least it went on easy and seems to be sturdy enough. The reason I got it was to raise up my (cheap-o) Red Green Dot Sight/558 Holographic Reflex Sight to where it was comfortable to see without having to press my face into the stock. The material is unknown to me, and going by other people's problems, it's probably the infamous, "Chinesium" metal. I have other 'things' made from that which have stood the test of time, but, we'll see... The adjustability was actually good, I was surprised. The stability seems to be fair, no rocking or wiggling. The appearance is really good, it actually fits the dimensions of the sight, so, that is good. I guess that if you are looking to cheap out, this is O.K., I know that there are other brands out there that are better, but cost a lot more, so it all depends on what your needs are as to whether or not it's worth the risk.

Truly is a half inch for co-witnessing

Great quality product. Never been disappointed with these. Quick mounting from one rifle to the next.

Appeared sturdy, but when attached to rail, it doesn't tighten up enough to prevent the optic to be able to be zeroed in. Ended up tossing them in the extra pats drawer

I put on my AR-15 on my Atlas bipod so I could have a quick disconnect I went and shot within five rounds the thing sprung apart and pieces went everywhere I managed to find the black bar and the bolt handle but all the Springs were gone it look like a failure of the roll pin. Couple weeks later I tried the second one made sure I didn't over tighten it turn off after six or seven shots the thing flew apart on me it appears the insignificant roll pins do not hold up I found enough pieces out of the bunch and put another roll pin in and it bent right away. So do not buy I don't care how late again you want they just won't last just attention to hold it on makes the roll pin start to bend on one end the thing is junk. Of course I'm about 20 days over my return. So unless the seller reaches out to me and refunds my money the review stands as a definite do not buy

It's advertised for use on optics. I don't know about trusting it for that but these things are outstanding for quickly disconnecting and reconnecting accessories like foregrips, angle grips, bipods, flashlights, etc. Gives you the ability to easily remove and re-attatch the stuff for transport if you have to put it in a case. I just don't know about using them for anything precision related like optics and laser sights.