Introducing Adaptive Tactical AT06000M - a perfect fit for Mossberg 500/590/Maverick 88. This is not just a simple and robust shell carrier, but a convenient tool to keep six 12 gauge shells instantly available to you. Stop fumbling around for shells and instead reload quickly from the side of the receiver.Whether you require it for home defense, sport shooting or law enforcement purposes, our durable Receiver Mounted Shell Carrier is engineered to perform under the most demanding conditions. Please note, this product is not exclusive to Mossberg users -- it is also compatible with Remington pump action shotguns.Important Forend ADVISORY: Should your shotgun carry a field grade forend extending onto the sides of the receiver, it may clash with the shell carrier, preventing full cycling. In this case, we recommend either shortening the forend or opting for a compatible alternative such as Adaptive\'s EX-Performance or Wraptor forends.