Ultimate Arms Gear Mossberg 500/590/835/Maverick 88 12 Gauge Shotgun Stock Shot Shell Shotshell Ammo Tactical Carrier Holder Mounts On Most Wood And Synthetic Stocks : Mounting Hardware, Template, And Instructions Included Provides Convenient Access To 5 Additional 12 Gauge Shells For A Tremendous Tactical Advantage Constructed Of Injected Military Grade Reinforced Polymer Made In The USA