Choate Tool Mossberg Top Folder12 Gauge. These stocks are made of solid cast steel with plastic over molded around it. This stock is operated with a simple push of a thumb button to lock it in either the open or closed position.This stock fits shotguns with rifle sights and ventilated rib barrels. Will not fit shotguns with Ghost Ring style sights. Fits 2 3/4 3 and 3 1/2 inch guns. Weight- 2 lb .05oz L.O.P.- 14 1/4 in. Specifications for Choate Tool Mossberg Top Folder: Manufacturer: Choate Tool Country of Origin: USA Features of Choate Tool Mossberg Top Folder Top folding. Compact design. Cast steel and polymer construction. Locks both open and closed Package Contents: Choate Tool Mossberg Top Folder Choate Tool CMT-02-01-12: Mossberg Top Folder12 Gauge