Really works well - Kinetic Development Group SIDELOK Universal Scope Riser

I have 2 AR type rifles, both with only optic sights. I feel both work better for me with the optic raised up a little on a riser like this. On my first rifle I used a riser about this height, that uses wing-nut type fasteners. It does the job, but required using thread lock to keep the riser from loosening and falling off after 75-100 rounds fired. I bought this for the 2nd rifle, and it holds tight using the spring-lock, and yet its easily removed. This means I can keep the red-dot mounted permanently to this riser, and snap the riser on when i want to shoot, then remove it for storage and cleaning of the rifle. It seems to hold zero fine each time I remove it and put it back. This one costs more than double the screw-on one, but if I did not already own that other one, I would buy a 2nd one of these. I may do that anyway. It is solidly made, and locks on well each time I put it back. If I end up getting a scope or other optic, I would get an other one of these so I could easily swap from red-dot to scope or something like that.