Stephen, to expand on my original answer, all the current variations use the same mag.. The new mags won't work in the earliest, first released Buckmarks.

Stephen, no Sir, they are not all the same. A good run down on the differences here : rimfirecentral.com/threads/did-the-buckmark-magazine-design-change.119746/

Stephen, yes they are all the same. No matter what the model these guns all have the same basic action, manipulation and nomenclature as well as caliber and magazine. >>>> budsgunshop.com/product_info.php/products_id/28415/browning+112055190+buck+mark+magazine+10rd+.22+lr+blued+steel .....Have a great day!