Rich, I know a scope base can be installed on some of the pardner barrels, since the WGRS uses the rear 2 base holes, the WGRS will work too, I have a 20ga pardner, there's plenty of meat for it. The problem will be the front sight, will need to be sweated on I think. Check out the Peep and Firesight link in the Centerfire FAQ, the Williams shotgun shorty ramps can be sweated or screwed on, I spose the bead hole could be enlarged to 6-48 if it isn't already that size, but not deepened any, dunno if it would hold well without sweating, there wouldn't be much thread engagement.
Tim