Concept is good, but doesn't work as supposed to. - ODIN Works Tunable Low Profile Gas Block

Solid block construction & finish, and the adjustment screw works fine. I was able to tune the rifle exactly where I wanted it. However, the trouble started when I used the additional screw that is used to 'set' the adjustment screw. It uses the same screw hole and the idea is for it to butt up against the adjustment screw to prevent the adjustment screw from moving. It does this - BUT - as it tightens, it moves the gas adjustment screw - which closes the gas opening.

I went from perfectly tuned to not enough gas, and there is no way to set it where you want it without trial and error. Bad design.