The ATI TactLite Stock 12 Gauge Shell Carrier Side Saddle holds five 12-gauge shotgun shells. It fits ATI TactLite shotgun stocks with a chestrest attached. The TactLite Side Saddle Shell Carrier Mounts to the Cheekrest While Still Allowing the Adjustment of the Cheekrest. The included Military Type III anodized 6061 T6 aluminum mounting bar can be added to either side of the shotgun stock. The ATI TactLite Stock 12 Gauge Shell Carrier/Holder is made from rugged polymer. ATI Limited lifetime warranty and manufactured in the USA.