Need Bumper for a Griffin Cue

A local player needs a new bumper for a Griffin Cue (Butt). How do you go about finding one that will fit. I don't see a screw, so I'm assuming it's a press fit.

Thanks, I'm out of town, but I'll ask him to measure it.. I've searched and it looks like Griffin Cues may be part of Action Cues Co. Not sure if the bumpers would be the same or not, but Action bumpers are available at various sites. I can't find specific bumpers for Griffin so far.