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

Universal Minishell Adapter/Mag Follower Kit for Mossberg Pump Shotguns

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  • $25.00
  • $30.00
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Read the "Truth About Guns" Gear Review here!

This kit essentially provides a conversion to 590S functionality, but in a more robust design.  It contains our patent-pending 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.  

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) 

Customer Reviews

Based on 46 reviews
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B
Bill
Works great

I was worried it would get in the way of loading larger rounds but it did not. Works as it should and no worries with it falling out

M
Mark
Adapter AND Follower

I have a 590A1. At first, I installed the DT adapter but not the follower. I already owned an after-market "slime-green" color follower for easy sight of empty, so I thought I didn't need the DT follower. The adapter allowed for seamless cycling of 1 3/4, 2 3/4, 3 and snapcaps, until the last round. Every last round got hung up and wouldn't load. I did this a dozen times and confirmed that regardless of the round size the final round got hung up. I fussed with the adapter and reinstalled it. Same thing. It was so discouraging. Then I finally put in the DT follower as a last-ditch effort, though I thought, "how could this make a difference?" But it made all the differnce. The last round issue was completely fixed. The feed into chamber was perfect. I did a trial with a dozen full mag tubes of random size rounds and it was flawless. So satisfying.

Z
Zak Strickling
Worth every penny

The follower is easy to spot if unloaded, and the mini shell adapter is amazing. Being able to load minis and 2 3/4 shells and cycle them is amazing. I recommend this to anyone who has a Mossburg.

R
Ryan
Worth it, recommend to anyone with a Mossberg

This is an amazing product and I can load any size shell without having to change anything. Would recommend even if you don't use mini shells often.

M
Marcelo
Very well built

Very well built, easy to install, excellent aluminum quality and very good price and super fast shipping! The best for Mossberg fits perfectly. Excelent company !!

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