
Availability: In Stock
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.
| 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 |
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.
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.
The M12AR-B1 comes with two 5-round magazines, providing capacity for sport shooting, hunting, and tactical use.
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.

SKU: 120912840 • Width: 10.5in • Height: 3in • Depth: 41.5in • Weight: 12.5oz





Availability: In Stock
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.
| 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 |
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.
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.
The M12AR-B1 comes with two 5-round magazines, providing capacity for sport shooting, hunting, and tactical use.
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.

SKU: 120912840 • Width: 10.5in • Height: 3in • Depth: 41.5in • Weight: 12.5oz