Description
The JTS M12AR B1 12GA AR-Style Shotgun, 18.7in Barrel is a modern, semi-automatic scattergun built on a familiar AR platform, chambered in 12 gauge. It features an 18.7-inch chrome-lined barrel, a 4-position adjustable gas system, and accepts standard Rem choke tubes. The shotgun ships with two 5-round box magazines and a top Picatinny rail for optics. Priced at $356.99, it offers a practical, modular alternative for shooters who want AR ergonomics in a shotgun.
| Manufacturer | JTS Group |
|---|---|
| Model | M12AR B1 |
| Material | Aluminum receiver, synthetic polymer furniture |
| Compatibility | Accepts Remington choke tubes (thread pattern: Rem Choke) |
| Finish | Matte black anodized receiver, black polymer stock and forend |
| Weight | 7.2 lbs (per manufacturer specs) |
| Condition | New |
Key Features
- 4-Position Adjustable Gas System – This lets you fine-tune the gun’s cycling for everything from light target loads to heavy 3-inch magnums. Why it matters: you won’t get short-stroked on cheap birdshot, and you can dial it back for softer recoil on heavier shells.
- 18.7-Inch Chrome-Lined Barrel – Chrome lining resists corrosion and makes cleaning easier after a long day in the field. Why it matters: a barrel that lasts longer and stays accurate through wet dove hunts or muddy duck blinds.
- AR-Pattern Controls and Stock – Safety, bolt release, and magazine release are all in familiar AR positions. Why it matters: if you’ve shot an AR-15, you already know how to run this shotgun. No learning curve.
- Two 5-Round Box Magazines Included – Quick reloads without fumbling with a tube. Why it matters: more time shooting, less time stuffing shells. Plus, you have a spare ready to go.
- Optic-Ready Top Picatinny Rail – Mount a red dot or scope directly to the receiver. Why it matters: you can set up the gun exactly how you like it, whether for slugs or birdshot.
Who It’s For
This shotgun is for the southern shooter who likes the feel of an AR but needs a 12-gauge for birds, clays, or home defense. It’s also for the budget-minded hunter who wants a reliable semi-auto without spending north of $500. If you appreciate modularity and adjustable gas systems, this one fits the bill.
Pros & Cons
- Pro: Affordable price point – under $360 for a gas-operated semi-auto with an adjustable gas system and chrome-lined barrel.
- Pro: AR-style controls make it intuitive for anyone familiar with the platform.
- Pro: Accepts Remington choke tubes, so you can swap chokes easily for different game.
- Con: The included 5-round magazines are on the smaller side, and aftermarket extended mags are still limited. You’ll want to buy a few extra or look for aftermarket options if you plan to run it hard.
- Con: Some shooters report the gas system needs a little break-in before it runs reliably with light target loads. Per JTS specs, a thorough cleaning and lubing before first use helps.
Comparison
| Feature | JTS M12AR B1 | Zev Technologies Z12 | Lone Wolf Distributors Timberwolf 12 |
|---|---|---|---|
| Price | $356.99 | ~$1,200 | ~$850 |
| Barrel Length | 18.7″ chrome-lined | 18.5″ chrome-lined | 18.5″ chrome-lined |
| Gas System | 4-position adjustable | Fixed gas system | 2-position adjustable |
| Magazine Capacity | 5 rounds (2 included) | 5 rounds (1 included) | 5 rounds (1 included) |
| Weight | 7.2 lbs | 7.5 lbs | 7.0 lbs |
| Choke Compatibility | Rem Choke | Rem Choke | Beretta/Benelli Mobil |
| Optic Ready | Yes – top Picatinny rail | Yes – top Picatinny rail | Yes – top Picatinny rail |
FAQ
Can this shotgun handle 3-inch magnum loads?
Yes. The JTS M12AR B1 is chambered for both 2 3/4-inch and 3-inch shells. The 4-position adjustable gas system lets you tune the gun for heavier loads, so you won’t beat yourself up shooting magnums all day.
What kind of choke tubes does it use?
It uses standard Remington choke tubes (Rem Choke pattern). That means you can swap in any aftermarket Rem-choke tube for different patterns, whether you’re shooting steel shot for ducks or lead for doves.
Is the stock adjustable for length of pull?
No, the stock is a fixed synthetic AR-style stock with a standard length of pull. If you need a shorter or longer pull, you can swap the buffer tube and stock for an aftermarket AR stock, since the receiver uses a standard carbine buffer tube.
How many magazines come with it?
It ships with two 5-round box magazines. That gives you a spare right out of the box. Extra magazines are available separately from JTS.
Order the JTS M12AR B1 12GA AR-Style Shotgun
This is a solid, affordable semi-auto shotgun that brings AR ergonomics to the 12-gauge world. Whether you’re working on a dove field or setting up a home defense gun, the JTS M12AR B1 delivers reliable performance. Semi Auto Shotguns like this one are in stock now.
Also check our AR Shotguns and 12 Gauge Shotguns categories for more options.
✓ Nationwide delivery to all 50 states
✓ Ships within 1-2 business days
✓ 30-day return policy
✓ Secure checkout
Last updated: April 2026
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