Citadel Mariner Cit Frmn1220nkl Mariner 12g 18.5 4r Wal

Citadel Mariner FRMN1220NKL 12-Gauge 18.5" 4-Round Walnut Shotgun

Citadel
SKU:
126820051
|
UPC:
682146897203
|
MPN:
FRMN1220NKL
$258.38
$279.00
(You save $20.62 )
Current Stock:
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Product Specifications
Hand:
Right Hand
Finish-Color:
Walnut
Capacity-Rounds:
4
Barrel Length:
18.50"
Caliber-Gauge:
12 Gauge
Barrel Length Range:
18" to 18.99"
Action:
Pump
Barrel Description:
Full Heat Shield
Chamber:
3"
OAL:
39"
Receiver Description:
Picatinny Rail
Sights:
Blade Front/Adj Rear
Weight:
6.90 lbs
Weight Range:
6 lbs to 6.99 lbs
Stock Description:
Fixed
Stock Finish Group:
Brown
Product Overview

The Citadel Mariner 12-gauge pump-action shotgun is built for home defense and tactical applications where reliability and quick follow-up shots matter. With an 18.5-inch barrel, compact 39-inch overall length, and a sturdy walnut stock finished in nickel, this shotgun delivers classic handling with modern-ready features. The 4+1 magazine capacity (4 rounds in tube, 1 in chamber) keeps you combat-ready, while the full-length barrel heat shield protects your support hand during sustained fire and keeps the gun cooler under pressure.

This is a no-nonsense working shotgun for shooters who want a dependable pump gun without excess bulk. The nickel finish resists corrosion—important if you're operating in harsh conditions—and the walnut furniture gives it a timeless look. Whether you're running low-light home-defense drills or setting up for a tactical course, the Mariner handles like a gun that was designed to be used, not just owned.

Sighting options include an adjustable rear sight mounted on an integrated Picatinny rail for optics or backup iron co-witness, plus a blade front sight for quick target acquisition. The shotgun ships with three choke tubes for flexibility across different loads and distances, and a side shell holder keeps ammunition accessible during reloads. The gun accepts 2¾- and 3-inch shells, giving you load options across buckshot, slug, and birdshot for hunting or sport shooting.

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.