Remington 870 Tactical — 12 Gauge 

• Model / Type: Remington 870 Tactical — pump-action shotgun (tactical/riot configuration).

• Caliber: 12 gauge

• Action: Pump / slide-action (manual).

• Capacity: Typically 4+1 to 8+1 (varies by magazine tube length, shell length, and whether an extended tube or magazine plug is fitted).

• Chamber: 2-3/4" standard on many tactical models; some models accept 3" shells — verify stamped chamber length.

• Barrel length (common tactical options): 18.5" 

• Magazine tube: Fixed tubular magazine under barrel; length determines capacity; many tactical builds use extended tubes or tube clamps.

• Stocks & Furniture: Synthetic tactical stock (fixed or pistol-grip), often with textured forend; many available with M-LOK / accessory rails or heat shields.

• Sights: Bead front sight, fiber-optic front, or ghost-ring/rear combo on tactical variants; optics rail or receiver drilled/tapped for optics on many models.

• Barrel & Choke: Smoothbore barrel; cylinder bore choke is common in tactical models (some barrels are fixed choke). 

• Action bars & internals: Stamped steel receiver with dual action bars on most 870s for durability and smooth cycling.

• Finish: Matte parkerized, blued, Cerakote, or parkerized/stainless options depending on model and year.

• Accessory readiness: Commonly configured with Picatinny rails, forend rails, side saddles, shell carriers, optics, lights/lasers.

• Safety: Cross-bolt safety (usually located behind the trigger on many tactical layouts) — verify placement on your specific build.

• Common variants: 870 Express Tactical, 870 MCS / Modular Combat Shotgun, 870 Police/PM-version, 870 Tac Lumber.

• Use cases: Home defense, law enforcement, military, competition (tactical), and general-purpose utility.

• Made in: USA (Remington).

• Notable: Renowned for simplicity, ruggedness, vast aftermarket support, and wide parts availability; many users customize heavily with stocks, rails, and magazine upgrades.