FAB Defense PR-MO Rail System — For Mossberg 500 / 590 / Shockwave / Maverick 88 — 7.91" OAL — Black Reinforced Polymer — FXPRMO (UPC: 7290105940421)
Upgrade your Mossberg shotgun into a tactical powerhouse with the FAB Defense PR-MO Rail System (FXPRMO) — a precision-engineered forend designed for Mossberg 500, 590, Shockwave, and Maverick 88 models. Constructed from reinforced high-grade polymer, this durable, lightweight rail system offers multiple MIL-STD-1913 Picatinny rails for mounting lights, lasers, grips, or any mission-essential accessories. Built for professionals, home defenders, and shooting enthusiasts, the PR-MO delivers the perfect balance of ergonomics, strength, and modular versatility.
Modernize Your Mossberg Shotgun
The FAB Defense PR-MO Rail System transforms your classic pump-action Mossberg into a multi-role tactical platform. Measuring 7.91 inches in overall length, it provides ample space for accessory customization while maintaining a balanced, low-profile fit. The precision-molded design fits seamlessly on your shotgun, giving you the stability and flexibility needed for law enforcement, security, home defense, or competitive shooting applications.
Three Integrated MIL-STD-1913 Picatinny Rails
The PR-MO comes equipped with three built-in Picatinny rails to maximize your shotgun’s adaptability:
Top Rail — ideal for optics, red dots, or iron sight mounts.
Dual Side Rails — perfect for tactical lights, lasers, or sling attachments.
Each rail adheres to strict MIL-STD-1913 (Picatinny) specifications, ensuring a secure fit and compatibility with most aftermarket accessories. Whether you’re optimizing for low-light defense, breaching, or competitive shooting, this system gives you the modularity you need.
Lightweight Yet Battle-Tough Construction
FAB Defense builds the PR-MO from fiberglass-reinforced polymer, a material known for its exceptional strength-to-weight ratio. This ensures uncompromising durability under heavy recoil and field use while keeping your shotgun maneuverable and balanced. The polymer resists impact, heat, and corrosion, making it a field-proven solution for rugged environments — from tactical missions to harsh weather hunting conditions.
The black matte finish not only offers a professional, non-reflective appearance but also complements modern tactical builds perfectly.
Ergonomic, Non-Slip Grip Design
The PR-MO features an ergonomic, contoured grip profile that ensures comfortable and secure handling during extended use. The textured surface provides a non-slip hold, even in wet, sweaty, or gloved conditions. This design improves weapon control during rapid cycling and high-stress situations, enhancing both accuracy and shooter confidence.
Drop-In Installation — No Gunsmithing Required
Designed for simplicity and compatibility, the FAB Defense PR-MO Rail System installs easily in minutes. The drop-in design allows shooters to replace their factory forend with the PR-MO using basic tools — no permanent modifications needed. Once mounted, the forend locks securely in place and maintains zero for any mounted accessories, even after repeated firing or pump-action cycles.
Key Features & Specifications:
Model: FXPRMO
UPC: 7290105940421
Compatibility: Mossberg 500 / 590 / Shockwave / Maverick 88 pump-action shotguns
Material: Reinforced fiberglass polymer
Color: Matte black
Overall Length: 7.91 inches
Rails: Three MIL-STD-1913 Picatinny rails (top and dual side rails)
Mounting Type: Drop-in forend replacement (no gunsmithing required)
Ergonomics: Textured, non-slip grip surface for enhanced control
Durability: Impact, heat, and weather resistant
Benefits:
Increased versatility: Attach optics, lights, lasers, or grips for mission-specific setups.
Lightweight yet rugged: Reinforced polymer reduces weight without sacrificing strength.
Improved handling: Ergonomic shape enhances comfort and control.
Easy installation: Drop-in design for quick, secure fitment.
Professional look: Matte black finish complements tactical and home-defense builds.
Reliable performance: Withstands recoil and field abuse without flex or shift.
Perfect For:
Law enforcement and tactical operators needing a reliable, modular shotgun platform.
Home defense users upgrading for low-light and high-speed readiness.
Hunters and sport shooters seeking ergonomic control and accessory options.
Firearm enthusiasts modernizing their Mossberg 500, 590, or Maverick 88 builds.
Maintenance & Care:
Clean with a damp cloth and mild soap to remove debris or carbon buildup. Avoid harsh chemical solvents that may degrade polymer materials. Periodically inspect mounting hardware to ensure all accessories remain securely attached.
Why Choose FAB Defense?
FAB Defense is globally trusted by military, law enforcement, and professional shooters for its combat-proven firearm accessories. The PR-MO Rail System (FXPRMO) showcases the brand’s commitment to quality engineering, ergonomic innovation, and battlefield reliability. By combining rugged construction with precise fitment and modular flexibility, FAB Defense ensures that every shot you take is backed by unwavering performance.
SEO Keywords (for discoverability):
FAB Defense PR-MO, FXPRMO, Mossberg 500 rail system, Mossberg 590 forend, Shockwave Picatinny rail, Maverick 88 accessories, tactical shotgun forend, Mossberg 500 handguard, black polymer rail system, reinforced polymer shotgun forend, 7290105940421.
Upgrade your Mossberg 500, 590, Shockwave, or Maverick 88 into a tactical, modular powerhouse with the FAB Defense PR-MO Rail System (FXPRMO) — the perfect combination of strength, adaptability, and precision engineering for modern shooters.
The End
