Description
The TriStar Cobra III Force 12ga 18.5 in Pump Shotgun is a reliable defensive firearm built for home protection and tactical training. It combines a compact 18.5-inch barrel with a fixed pistol-grip synthetic stock, making it easy to maneuver in tight spaces. The pump-action design includes a forearm return spring that speeds up cycling when engaged, or you can remove it for traditional operation. This shotgun ships ready for accessories with Picatinny rails on the receiver and forearm, plus a ghost-ring rear sight and fiber-optic front sight for fast target acquisition.
| Manufacturer | TriStar Arms |
|---|---|
| Model | Cobra III Force |
| Material | Synthetic stock, aluminum receiver (per manufacturer specs) |
| Compatibility | 12 Gauge 2.75-inch and 3-inch shells |
| Finish | Black matte synthetic |
| Weight | Approximately 6.5 lbs (per manufacturer specs) |
| Condition | New |
Key Features
- Forearm Return Spring — Why it matters: It lets you cycle the action faster under stress, giving you quicker follow-up shots in a defensive situation. When not needed, you can remove it for a traditional pump feel.
- Integrated Picatinny Rails — Why it matters: The receiver rail accepts red dots or backup sights, and the forearm rail lets you mount a light or laser. No gunsmithing required.
- Ghost-Ring Rear Sight with Fiber-Optic Front — Why it matters: You get a clear sight picture in low light, which is critical for home defense scenarios. The fiber optic gathers ambient light for bright aiming.
- Fixed Pistol-Grip Stock — Why it matters: It gives you a more vertical wrist angle, reducing muzzle rise and improving control during rapid fire. The synthetic material resists weather and drops.
- 18.5-Inch Barrel — Why it matters: At just over 18 inches, this barrel stays legal for most states while keeping the shotgun short enough for hallways and doorways.
Who It’s For
This shotgun is built for families who want a simple, reliable home-defense tool. It works for beginners because the pump action is intuitive and the pistol grip helps manage recoil. Experienced shooters will appreciate the rail system for adding lights and optics. It’s also a solid choice for budget-conscious buyers who need a defensive gun without breaking the bank.
Pros & Cons
- Pro: Affordable price under $250 for a tactical pump shotgun
- Pro: Lightweight at 6.5 lbs, easy to carry and store
- Pro: Includes rails and sights out of the box
- Con: The fixed pistol grip may not fit all hand sizes comfortably; consider adding a grip sleeve if it feels too small.
Comparison
| Feature | TriStar Cobra III Force | Mossberg 590 Shockwave | Remington 870 Tac-14 |
|---|---|---|---|
| Barrel Length | 18.5 inches | 14.375 inches | 14 inches |
| Stock Type | Fixed pistol grip | Raptor bird’s head grip | Knockoff pistol grip |
| Capacity | 5+1 (varies by state) | 6+1 | 4+1 |
| Rail System | Top and forearm rails | Top rail only | Top rail only |
| Price | $233.08 | $400–$500 | $350–$450 |
The TriStar Cobra III Force offers more rail space and a longer barrel than the Shockwave or Tac-14, making it easier to aim and accessorize. It costs significantly less, making it a strong value for new shooters.
FAQ
What is the capacity of the TriStar Cobra III Force 12ga 18.5 in pump shotgun?
It holds 5 rounds in the tube magazine plus 1 in the chamber, for a total of 6 rounds. This may vary based on local magazine capacity laws.
Can I change the pistol grip on this shotgun?
The stock is fixed and not easily interchangeable without aftermarket adapter parts. Most users find the grip comfortable for defensive use, but you can add a rubber sleeve for better hand fit.
Is this shotgun legal for home defense in all 50 states?
With an 18.5-inch barrel, it meets federal minimum length requirements. Check your state and local laws regarding shotgun barrel length and magazine capacity before purchasing.
Does it come with any accessories?
It includes a set of Picatinny rails (top and forearm) and factory-installed ghost-ring rear sight with fiber-optic front sight. No additional accessories are included.
How does the forearm return spring work?
When engaged, the spring helps push the forearm forward after each shot, speeding up the cycling process. To use traditional pump operation, simply remove the spring by unscrewing the forearm nut.
Ready to Order
✓ Nationwide delivery (all 50 states)
✓ Ships 1-2 business days
✓ 30-day returns
✓ Secure checkout
Last updated: April 2026
Check out our Pump Action Shotguns and Home Defense Shotguns for more options.
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