Main Photo Universal Cartridge Adapter/Mag Follower Kit for Mossberg Pump Shotguns

Universal Minishell Adapter/Mag Follower Kit for Mossberg Pump Shotguns

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$25.00
Regular price ~~$30.00~~

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This kit essentially provides a conversion to 590S functionality, but in a more robust design. It contains our patented Universal Cartridge Adapter and low-drag no-snag Magazine Follower which allows smooth cycling of 1-3/4" Minishells up to 3" Magnum cartridges 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 any Mossberg 12-Gauge pump-action firearm with a 3" Chamber and machined grooves in the receiver. Please refer to the picture below or the installation video below to confirm your firearm's compatibility. Not compatible with 590R.

Please note there may be a short break-in period for some adapters after installation. Cycle a few magazines of full-size shells if you initially experience issues with 1-3/4" shells, please reach out to us if problem persists.

*The Cartridge Adapter and Magazine Follower are optimized to function as a pair, but the factory follower may function as well for those that do not wish to remove it.

(PATENT PENDING U.S. PAT. OFF. 17693832)

Much better than expected.

It is the fact that I can use all length shells without having to remove the system each time like your competiyor. Great work!!!!!!!!

Works better than the competitor

Like the title says. I own both, and the defender tactical is a superior product. Instead of just mini shells, I can candy cane load any shell length and my Mossberg cycles them reliably.

So for so good

Easy to install on shockwave. Shoot 20 rounds so for so good.

Great Product

Have purchased several of these for myself and friends. Works very well in 88’s , 500’s and 590’s .
Great for new shooters, older folks and smaller framed women to reduce recoil . Really recommend them for versatility .

Didn’t work for me

Installed both the adapter and follower into my new Mossberg 500. The shortie shells don’t consistently work. If the last round in the magazine tube is a shortie, it flips and jams 99% of the time. Sometimes the shorties flip even if they aren’t the last round and I am not short stroking. Really wish it could be more reliable.

Hi Vinny sorry you are having trouble, we'll contact you by email so we can figure out what's going on.

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Universal Minishell Adapter/Mag Follower Kit for Mossberg Pump Shotguns

Customer Reviews