JTS M12AR-B1 18.5" Semi-Auto 12 Gauge Shotgun - Black
$380.63
- Capacity-Rounds:
- 5
- Caliber-Gauge:
- 12 Gauge
- Hand:
- Right Hand
- Barrel Length:
- 18.70"
- Barrel Length Range:
- 18" to 18.99"
- OAL:
- 37.99
- Chamber:
- 3"
- Metal Finish Group:
- Blued/Black
- Action:
- Semi-Auto
- Stock Finish Group:
- Black
- Sights:
- Removable Front & Rear
- Barrel Description:
- Chrome-Lined Steel
- Choke Configuration:
- Rem Choke
The JTS M12AR-B1 is a modern semi-auto 12 gauge shotgun built for shooters who want AR-platform ergonomics and versatility without the AR-15 price tag. With an 18.5" barrel, short overall length of roughly 38", and a gas-operated design, this tactical shotgun handles everything from sport shooting to home defense. The four-position gas system lets you tune performance to your load—whether you're running light target loads or full-power buckshot—so you get reliable cycling and manageable recoil across the board.
The M12AR-B1 comes ready to customize. A Picatinny rail on top accepts your choice of red dot, scope, or other optics. The receiver is drilled and tapped, and the chrome-lined barrel resists corrosion and wear. The shotgun accepts Rem choke tubes (cylinder choke included), so you can swap patterns for different game and ranges. Two 5-round magazines ship with the gun, giving you practical capacity for competition, hunting, or tactical use.
This is a no-nonsense shotgun for the hunter or sport shooter who values adjustability and modern handling. The compact profile makes it manageable in tight spaces, while the semi-auto action delivers speed and follow-up shot capability. If you shoot standard 2¾" or 3" shells, the M12AR-B1 will cycle both—just dial in the gas system for your preferred load and go to work.
Key Features
- Semi-automatic gas operation with 4-position adjustable gas system for load tuning
- 18.5" chrome-lined barrel optimized for reliability and durability
- Picatinny rail for mounting optics and tactical accessories
- Rem choke tube compatible with cylinder choke included
- Compact 37.99" overall length for easy handling and storage
- Includes two 5-round magazines for capacity and reloading flexibility
- Shoots both 2¾" and 3" shotshells
Specifications
| Gauge | 12 gauge |
| Action | Semi-automatic, gas-operated |
| Barrel Length | 18.5" |
| Overall Length | 37.99" |
| Barrel Coating | Chrome-lined |
| Shell Lengths | 2¾" and 3" |
| Choke System | Rem choke tubes (cylinder included) |
| Gas System | 4-position adjustable |
| Magazines Included | Two 5-round magazines |
| Rail System | Picatinny |
| Finish | Black |
Frequently Asked Questions
Will the JTS M12AR-B1 cycle both 2¾" and 3" shells?
Yes. The M12AR-B1 is chambered for both 2¾" and 3" shells. The 4-position gas system is adjustable so you can tune it to your specific loads for reliable cycling and optimal performance.
What choke tubes are compatible, and what comes in the box?
The shotgun accepts standard Rem choke tubes. It ships with one cylinder choke installed, giving you a starting point; you can swap in other chokes as needed for different shooting applications.
How many rounds does it hold?
The M12AR-B1 comes with two 5-round magazines, providing capacity for sport shooting, hunting, and tactical use.
Can I mount a scope or red dot on this shotgun?
Yes. The M12AR-B1 features a Picatinny rail on the receiver, so you can mount optics, red dots, or other accessories to suit your needs.
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.
