The Tokarev USA TSP-12 (often referred to in demonstration as the Tokarev SMA Reverse Pump) is a 12-gauge shotgun that features a unique stock-actuated pump system. Unlike a traditional pump-action where you slide the forend back and forth, this "reverse pump" or "stock action" system cycles the firearm by pulling the buttstock or pistol grip rearward. 

Key Specifications
Action Type: Stock-actuated "Reverse Pump" action.
Capacity: 4+1 rounds.
Chamber: 3-inch 12-gauge.
Barrel Length: 18.5 inches with a ventilated heat shield.
Choke System: Compatible with Benelli Mobil choke tubes (includes F, M, IC).
Sights: Fiber optic front sight; receiver is drilled and tapped for optics.
Furniture: Synthetic stock with an M-LOK compatible forend for accessory mounting. 

Performance & Design
Innovative Cycling: The reverse pump design is marketed for fast handling and versatility, potentially offering fewer moving parts than a standard pump system.
Tactical Compatibility: It features a durable anodized finish and an aluminum receiver to keep the weight manageable for home defense and range use.

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