The FAB Defense FXPRMO PR-MO Rail System replaces the factory forend on compatible Mossberg shotguns with a reinforced polymer unit that adds three Picatinny rails for accessories. It is finished in black and measures 7.91″ overall. The rail system is compatible with 12 Gauge Mossberg 500, 590 and Shockwave models, and with Maverick 88 when used with a separate Mossberg 500 7-3/4″ Action Slide (sold separately). This model will not fit Mag-Fed versions or 14″ barrel versions.
Key Specifications
- Made by FAB Defense.
- Model designation: FXPRMO PR-MO Rail System.
- Compatible with 12 Gauge Mossberg 500, 590 and Shockwave.
- Compatible with Maverick 88 when used with a Mossberg 500 7-3/4″ Action Slide purchased separately.
- Overall length is 7.91 inches OAL.
- Constructed from reinforced polymer.
- Finish: Black.
- Includes three Picatinny rails for mounting accessories.
- Product type: Railed forend.
- This model does not fit Mag-Fed versions or 14″ barrel versions.
The FXPRMO PR-MO rail system delivers a durable, lightweight platform for mounting lights, sights, and other accessories while maintaining straightforward installation for compatible Mossberg shotguns. Its reinforced polymer construction and integrated Picatinny rails make it a practical upgrade for users seeking a robust, modular forend that blends utility with a low-profile appearance.
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