Magpul SGA Mossberg 12 Gauge Shotgun Stock - Black - The Magpul SGA stock is an ambidextrous, user-configurable buttstock designed to add much-needed adjustability to the Mossberg 500/590/590A1 12 Gauge series of shotguns. It features a spacer system for length-of-pull adjustment, improved grip ergonomics, a recoil-reducing butt-pad, and optional cheek risers for use with optics/raised sights and other accessories. The Mossberg SGA brings Magpul design and engineering to another classic American firearm. Made In The USA