G'Day Daryl and thank you.

I blasted it but with Garnet, not Glass Beads.
This is the same abrasive media I use to prepare metal surfaces, prior to Cerakoting.
It is more abrasive/aggressive than glass beads, and in this instance, gives it a good grippy surface.
I use the two, rear flared out wings of the mount, to retract the slide with, and this added grippy surface helps.

Regards
Homer