Lenny Magill shows off the RBU for Glocks!
This guide details the installation of the RBU (Red dot Back Up) mount for Glock handguns, as demonstrated by Lenny Magill. The RBU offers an integrated iron sight solution that mounts via the rear sight dovetail, avoiding permanent slide modification. The process involves removing the factory rear sight and tapping the RBU into place, followed by mounting the red dot optic.












