The Mossberg 590 Magpul Series shotguns feature Magpul SGA stocks and
MOE forends designed specifically for the tactical shotguns. The SGA
stock features a spacer system for LOP adjustment, offers improved grip
ergonomics, a recoil-reducing buttpad and optional cheek riser for use
with mounted optics or raised sights. The MOE forend features extended
length and front/rear hand stops for control. It is fully compatible
with MOE rails, mounts and accessories.