FAB Defense PR-870 Rail System — For Remington 870 — Three Picatinny Rails — 7.30" OAL — Black Reinforced Polymer — FXPR870 (UPC: 7290105940438)
Upgrade your Remington 870 shotgun with tactical precision and enhanced accessory capability using the FAB Defense PR-870 Rail System (FXPR870). Engineered for professional shooters, law enforcement, and tactical enthusiasts, this lightweight yet rugged forend system features three integrated Picatinny rails, allowing you to easily mount lights, lasers, grips, and other mission-critical accessories. Built from reinforced high-grade polymer, it provides durability and performance without adding unnecessary weight to your shotgun.
Transform Your Remington 870 into a Tactical Platform
The FAB Defense PR-870 Rail System is designed specifically for the legendary Remington 870 pump-action shotgun, one of the most trusted platforms in the world. With three precision-molded MIL-STD-1913 Picatinny rails, this upgrade gives you the flexibility to equip your shotgun with the modern attachments you need — from tactical flashlights and laser aiming modules to vertical grips and side-mounted accessories.
Its 7.30-inch overall length provides ample space for accessory placement while maintaining maneuverability and balance, making it ideal for both close-quarters applications and field use.
Three Integrated Picatinny Rails for Full Customization
The PR-870 includes:
1 Top Rail — perfect for optics, red dots, or sighting systems.
2 Side Rails — ideal for tactical lights, lasers, or sling mounts.
All rails adhere to MIL-STD-1913 (Picatinny) specifications, ensuring precise fit and universal compatibility with most industry-standard accessories. This gives you the flexibility to create a fully modular shotgun tailored to your specific operational needs.
Rugged Reinforced Polymer Construction
Crafted from fiberglass-reinforced polymer, the FXPR870 rail system is built to withstand heavy recoil, extreme temperatures, and harsh field conditions. Its polymer design is both impact- and heat-resistant, offering exceptional structural integrity without the excessive weight of traditional metal handguards.
The result is a lightweight, corrosion-proof forend that enhances performance and reduces fatigue during extended use — whether in tactical training, home defense, or field operations.
Ergonomic, Non-Slip Grip Design
FAB Defense’s engineering team prioritized comfort and control. The PR-870’s ergonomic profile and textured grip surfaces ensure a secure, non-slip hold even in wet or gloved conditions. Its slim, contoured design provides a natural feel for faster handling and improved pump action response, helping shooters maintain consistent accuracy under pressure.
Easy Installation — No Gunsmithing Required
Designed as a drop-in replacement, the PR-870 installs quickly using standard tools and requires no permanent modification to your Remington 870. Simply remove the factory forend and slide on the PR-870 rail system for a precise, rock-solid fit.
Once installed, it locks firmly in place, maintaining zero for mounted accessories even after heavy use or rapid cycling.
Key Features & Specifications:
Model: FXPR870
UPC: 7290105940438
Compatibility: Remington 870 pump-action shotguns
Material: Reinforced fiberglass polymer (high-strength, lightweight)
Color: Matte black
Overall Length: 7.30 inches
Rails: 3 MIL-STD-1913 Picatinny rails (top and sides)
Mounting Type: Drop-in replacement forend
Design: Ergonomic and non-slip for optimal grip and control
Durability: Heat, impact, and recoil resistant
Benefits:
Expands customization options with three accessory rails.
Lightweight design reduces fatigue during extended use.
Durable construction built to endure recoil and harsh conditions.
Improved weapon handling and grip comfort.
Simple installation — no gunsmithing required.
Sleek tactical appearance to modernize your Remington 870.
Ideal For:
Tactical and law enforcement professionals who need a reliable modular platform.
Home defense users upgrading their 870 for improved control and accessory options.
Competitive and practical shooters adding lights or lasers for precision.
Hunters seeking improved ergonomics and customization.
Maintenance & Care:
Clean with a soft cloth and mild solvent after exposure to moisture, mud, or carbon buildup. Avoid harsh chemicals that may degrade polymer materials. Inspect rails regularly to ensure secure mounting of accessories.
Why Choose FAB Defense?
FAB Defense is trusted globally by military, law enforcement, and civilian shooters for its battle-tested, precision-engineered firearm accessories. The PR-870 Rail System (FXPR870) exemplifies that legacy — delivering lightweight durability, ergonomic handling, and modular versatility to one of the most reliable shotguns ever made.
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Upgrade your Remington 870 into a modern, mission-ready shotgun with the FAB Defense PR-870 Rail System (FXPR870) — the ultimate blend of strength, versatility, and precision engineering for today’s tactical shooter.
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