Mounted a HS 507K ACSS on the Alchin mount.

No problems and it's not that high. Really like it so far. Haven't fired / zeroed it yet. One nice thing is the K optic has a rear sight notch. The front sight of the revolver is just barely visible when it's set down in it. Not sure where that will send bullets but I'm going to find out.
Total weight added is about 1.125 oz.