Keymo is heavy and unnecessarily complex. I know that this is not a popular opinion but i've had more issues with my keymo mounted devices than I have with direct thread, YHM or Griffin Plan A adapters.
I divested myself of four Keymo devices and only have a Sandman K left in my inventory. I dislike Keymo so much that i'm considering sending my Sandman K to Echo Machine to have him chop it off and rethread it 1.375X24.
The G19 of suppressor mounts is direct thread plus torque plus rocksett. It's not gucci. It simply works.