Tristar Cobra III Marine 12ga Pump Action Shotgun 18.5" Barrel Silver

Tristar Cobra III Marine 12ga Pump Action Shotgun - 18.5" Barrel, Silver Finish

TriStar
SKU:
120918039
|
UPC:
713780231648
|
MPN:
23164
$336.27
$379.00
(You save $42.73 )
Current Stock:
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Product Specifications
Capacity-Rounds:
5
Caliber-Gauge:
12 Gauge
Hand:
Right Hand
Barrel Length:
18.5"
Barrel Length Range:
18" to 18.99"
Chamber:
3"
Weight:
6.20 lbs
Action:
Pump
Safety:
Manual Thumb
Stock Finish Group:
Black
Sights:
Blade Front
Weight Range:
6 lbs to 6.99 lbs
Barrel Description:
Chrome Lined
Chokes Included:
C
Choke Configuration:
MobilChoke
Product Overview

The TriStar Cobra III Marine 12ga pump action shotgun is a compact, reliable home-defense and tactical option built for close-quarters work. With its 18.5-inch barrel and lightweight 6.2-pound profile, this 12-gauge delivers the stopping power of a full-size shotgun without the bulk—making it ideal for home defense, tactical training, or confined-space shooting scenarios. The silver finish and marine-grade construction suggest durability in challenging conditions, and the pump action design offers the manual control and simplicity that serious shooters depend on when accuracy and reliability matter most.

At just over 18 inches of barrel, the Cobra III Marine trades some velocity for maneuverability. That shorter sight radius is a tradeoff, but in defensive situations where targets are close, the compact profile often matters more than long-range performance. The 12-gauge chambering gives you access to a huge variety of ammunition options—from buckshot to slugs to specialty loads—so you can tailor your shotgun to your exact mission.

The pump action cycle is straightforward and proven. There's no learning curve, no batteries to fail, no complex mechanisms to foul up. Rack, aim, shoot—and repeat. For shooters who want a dependable, no-nonsense shotgun that handles like a rifle and hits like a truck, the Cobra III Marine is a solid choice.

Key Features

  • 12-gauge pump action shotgun with proven reliability
  • Compact 18.5-inch barrel optimized for tactical and defensive use
  • Lightweight at 6.2 pounds for easy handling and control
  • Silver finish with marine-grade durability
  • Simple, manual pump-action operation

Specifications

Gauge12ga
ActionPump
Barrel Length18.5 inches
Weight6.2 lbs
ChokeCT-1
FinishSilver

Frequently Asked Questions

Is the Cobra III Marine suitable for home defense?

Yes. The compact 18.5-inch barrel and lightweight profile make it well-suited for home-defense applications where maneuverability in tight spaces is an advantage.

What ammunition can I use in this 12-gauge shotgun?

The 12-gauge chambering accepts standard 12-gauge ammunition in various loads—buckshot, slugs, birdshot, and specialty rounds—giving you flexibility for different purposes.

How does the pump action work?

The pump (or slide) is manually worked back and forth to cycle rounds. Pull the trigger to fire, then rack the pump backward to eject the spent shell and chamber the next round.

What does the CT-1 choke mean?

The CT-1 is the factory choke constriction included with the shotgun. Chokes control shot spread; this one is optimized for the shotgun's intended use profile.

Additional Information

Firearm Shipments:

To buy rifles or shotguns, you must be 18 years old, and for handguns, actions, or receivers, the minimum age is 21. By placing an order for this firearm, you confirm that you are the legitimate transferee/buyer, meet the legal age requirements, and comply with all Federal, State, and local laws and regulations necessary to purchase this firearm.

We only ship firearms to valid Federal Firearms License (FFL) holders. At checkout we provide a FFL locator for your convenience.

We will need a copy of the FFL’s license to facilitate the process, kindly request your dealer to email us a copy of their FFL, as we cannot dispatch the firearm until we receive this document. It is imperative for the buyer to choose their FFL dealer, ensure they are willing to facilitate the transfer, and have them email their FFL copy to BOSQUE Outdoors. To avoid any confusion, the customer's name or order number must be mentioned in the email containing the FFL.

Email: [email protected]

  • Prior to placing an order, it is the buyer's responsibility to understand and adhere to their state's firearm regulations.
  • The buyer should verify with their receiving dealer that the chosen firearm is legally permissible in their state.
  • The buyer is accountable for any transfer fees or background check charges imposed by the receiving dealer. If the designated dealer declines to accept the firearm delivery, the buyer assumes responsibility for shipping costs to retrieve the firearm and resend it to an accommodating dealer.
  • Handguns will be shipped using air transportation, while long guns can be shipped using ground methods. If your order includes a mix of firearm and non-firearm items, BOSQUE Outdoors will send the firearm(s) to your selected FFL dealer and the remaining non-firearm items to your billing address.
  • Firearms cannot be returned to BOSQUE Outdoors; please contact the manufacturer for warranty claims.
  • Firearms refused by the FFL Dealer or which cannot be transferred due to a failed background check are subject to a $75 restocking fee plus 10% of the purchase price.