Lion gears qd riser - Lion Gears Quick Release Tactical Picatinny Weapon Mounts

We needed see-through QD risers for two estate-defense carbines and ordered these. After some delay in shipping, they arrived, and we installed them, with two RDS, on the rifles. They allow us to see the irons underneath the optic, and in case the RDS go Tango Uniform, which can and will happen, we can quickly and easily remove them for a better view of the sights and target.
The clamp and rail portions of the risers fit perfectly to the optics and the carbines' rails. They hold zero very well and also return to zero reliably when removed/replaced.
I subtracted one star due to the lack of a locking tab on the risers.
We recommend these risers to our friends and family, and will reorder them should the need arise.