The Adaptive Tactical shell carrier for the Mossberg 500, 590 and Maverick 88 (brand part no. AT-06000-M) keeps six 12 gauge shells on the side of the receiver, where a reload is a short reach instead of a trip to a pocket or a stock cuff. Adaptive Tactical molds the carrier from a chemical- and weather-resistant synthetic rubber that flexes to grip each shell and springs back to shape over years of use, mounted on a shaped plate that follows the receiver’s contours for a close, snag-resistant fit. The non-glare, heavy-duty construction suits home defense, sport shooting and law enforcement use alike, and the installation is non-permanent. One fitment note from Adaptive: a field-grade forend that extends back onto the receiver sides will hit the carrier and keep the action from cycling fully, so pair it with a shorter forend such as Adaptive’s EX-Performance. It is made in the USA and is not compatible with the magazine-fed Mossberg 590M.

Key Specifications

• Capacity is six 12 gauge shells, held individually in the carrier.
• It fits the Mossberg 500, 590 and Maverick 88 pump shotguns.
• It is not compatible with the Mossberg 590M, the magazine-fed variant.
• The carrier is synthetic rubber, chemical and weather resistant, and flexes to hold shells securely.
• The shaped mounting plate fits closely to the receiver’s contours for a streamlined profile.
• The construction is non-glare and heavy duty, built for hard use in bad conditions.
• The design is rapid access, keeping shells close to the receiver and reducing snagging on a reload.
• Installation is non-permanent and easy, with no gunsmithing.
• A forend advisory applies: a field forend that extends onto the receiver sides must be shortened or swapped to clear the carrier.
• It is made in the USA.

Frequently Asked Questions

Which shotguns does it fit? The Mossberg 500, 590 and Maverick 88. Adaptive also makes a version for Remington pump guns, and this one does not fit the 590M.

Will it work with my factory forend? Only if the forend stops short of the receiver sides. Adaptive advises that a field-grade forend extending onto the receiver will contact the carrier and prevent full cycling, so shorten it or fit a compatible forend such as the EX-Performance.

Does it hold shells securely under recoil? Yes. The flexible synthetic rubber carrier grips each shell and is designed to retain its shape over time rather than loosening.

Buy the Adaptive Tactical Receiver-Mounted 6-Round Shell Carrier for Mossberg 500, 590 and Maverick 88

Six rounds on the receiver turns a five-shot pump gun into a much more capable one. Order this Adaptive carrier with the rest of our shotgun accessories and parts from our Lubbock, Texas gun shop for fast direct shipping.