DEFENDER TACTICAL UNIVERSAL MINISHELL ADAPTER KIT, MOSSBERG

Product Description

Defender Tactical Universal Minishell Adapter Kit – Mossberg

Convert your compatible Mossberg 12-gauge pump-action shotgun to reliably cycle 1-3/4" Minishells while maintaining full compatibility with standard 2-3/4" and 3" shells. The Defender Tactical Universal Minishell Adapter Kit is designed to improve versatility without permanently modifying your firearm.

This kit includes a patented Universal Cartridge Adapter and a low-drag magazine follower, working together to ensure smooth feeding and reliable cycling across mixed shell lengths in the same magazine tube.

Features

• Enables reliable cycling of 1-3/4" Minishells, 2-3/4" standard shells, and 3" Magnum shells
• Includes patented Universal Cartridge Adapter and upgraded magazine follower
• Designed for improved feeding and reduced friction
• Drop-in design with no permanent modification required
• Optimized for use as a paired system

Specifications

• Platform: Mossberg 12-Gauge Pump-Action Shotguns
• Chamber Compatibility: 3" Chamber required
• Shell Compatibility: 1-3/4", 2-3/4", and 3" shells
• Compatibility Note: Receiver must feature machined grooves
• Not Compatible With: Mossberg 590R

Package Includes

• 1 × Universal Cartridge Adapter
• 1 × Low-Drag Magazine Follower

Important Information

Some firearms may require a short break-in period after installation. If feeding issues occur with 1-3/4" shells initially, cycling several magazines of full-size shells may help the system settle. If issues persist, consult the manufacturer for support.

Please verify firearm compatibility before installation.

A practical upgrade for Mossberg 12-gauge pump shotguns, this kit expands ammunition flexibility while maintaining reliable cycling across multiple shell lengths.