minishell adapter

** THIS KIT UPGRADES LEGACY 12-GAUGE MOSSBERG 500, 590 OR MAVERICK 88 FIREARMS TO 590S FUNCTIONALITY **

This kit contains our Patent Pending Universal Cartridge Adapter and Low-Drag No-Snag Magazine Follower which allows cycling of 1-3/4" Minishells up to 3" Magnums in the same magazine.

The adapter is constructed from vulcanized thermoplastic rubber, and the follower is machined from solid 6061-T6 billet aluminum.

This kit is compatible with all Mossberg 12-Gauge pump-action firearms with machined grooves in the receiver 

after instal this adapter in your shotgun, you will be able shoot 1-3/4 and 2-3/4 shell