Just Google the product you would like and go from there. Man It could be good to at least manage to get yourself a fifteen rounder or so. As far as other compatible makes, I'd use Mec-Gar also. Should be no trouble obtaining them. I'm looking a Ruger Computer carbine https://ruger-shotguns68899.canariblogs.com/the-5-second-trick-for-ruger-shotguns-47221044