The Archangel AA870 Tactical Stock System (also listed under ProMag branding in source data) is a modular replacement stock for the Remington 870 12 gauge shotgun platform. It uses a carbon-fiber reinforced polymer construction designed to resist weather and tolerate standard gun solvents and oils. The system offers a six-position collapsible buttstock, an ergonomic pistol grip with internal storage, and a tunable interchangeable-insert recoil pad for user preference. The military-length forend can be fitted with a smooth cap or a mini tri-rail cap to accept Picatinny-mounted accessories without sacrificing comfort.
Key Specifications
- The construction is Carbon Fiber/Polymer for weather resistance and chemical tolerance.
- The length of pull adjusts from 11 to 14.25 inches to suit different shooters.
- Features a 6-position collapsible buttstock for customizable fit.
- Includes an ergonomic pistol grip with integrated locking storage.
- Designed for the Remington 870 shotgun platform.
- Finished in black for a low-profile appearance.
- Offers length of pull and cheekrest adjustment options for consistent sight alignment.
- This item is a stock system intended to upgrade ergonomics and mounting options.
Whether you’re updating an older Remington 870 for improved ergonomics or configuring the platform for modern sighting systems and accessory rails, the AA870 Tactical Stock System provides durable construction and flexible fit options. Its modular design and adjustable features make it suitable for a variety of practical shooting applications where reliable, adaptable components are required.





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