Picatinny Riser Mount Rail Adjustable Height 0.9-1.2" Optic Riser Mount for Red Dot Sight Scope fit 20mm Picatinny/Weaver Rails Lightweight 3 Slots

Does exactly what it's meant to and cheap. Good quality

This has been made to exactly the opposite measurements of a picatinny rail. But due to the angles, that doesn't work (it needs to compensate). As a result, this riser doesn't attach properly. I imagine that if the positive reviewers went and checked, they'd find it isn't sitting flush. I wouldn't chance my optic to something holding on with about 20% of the surface area it should be clamping with. 1 star because it's fundamentally made wrong.

Brilliant, just what I needed! I didn't realize how good it was until it arrived, the ability to be able to raise the optic depending on mask is convenient!

Originally bought this for my holo sight. Mounting the riser was easy enough but required a hex key which was slightly inconvenient. I found that using a 1 inch riser is too high for holographic sight even if you adjust it. Giving 3 stars because though I can't use it, it looks to be of decent quality. Would be 4 stars if the screws didn't require a hex key

a need item for sights. received thanks.

Well made, tight tolerances, fits well. Didn't find the grub screws too soft, but did not overtighten either, treated with a bit of care when taking other reviews into account.

Won’t sit right on the rail as it’s poorly engineered….look elsewhere fellas!

I have a very small Red Dot Sight to which this product works perfectly.