Description
Anyone who has spent time behind an AR will feel right at home on the Derya DY12. The safety, grip, and general layout all follow that familiar pattern, so there's no relearning curve when you pick it up. Underneath the AR looks is a gas-operated semi-auto 12 gauge built on upper and lower receivers forged from 7075-T6 aluminum, which keeps the gun sturdy without turning it into a boat anchor. All in, it weighs around 8.3 pounds with a 38 inch overall length, and it handles both 2-3/4 inch and 3 inch shells through its 3 inch chamber.
What the DY12's 20 Inch Barrel Setup Gets You
The 20 inch threaded steel barrel takes the included mobile choke tubes, with Improved Cylinder, Modified, and Full in the box. That means you can tighten up patterns for longer shots or open things up for close work at the range without buying anything extra. Flip-up front and rear sights come standard and get you on target right away, while the top rail leaves room for a red dot when you're ready. The M-LOK handguard gives you real estate for a light or hand stop, and the mil-spec pistol grip swaps easily if you have a favorite.
A Complete Package from Derya
This is one of those guns where the box is half the fun. You get three magazines, a 2-round, a 5-round, and an extended 10-rounder, plus a premium soft case, a gun lock, and a Derya accessory bag stocked with a manual, cleaning cloth, earmuffs, a heavy piston, and a sling. Few shotguns show up this ready to go.
Feeding the Derya DY12 Right
Like most mag-fed semi-auto shotguns, the DY12 runs happiest on quality loads moving 1,250 fps or faster. Stick with high-brass field loads, full-power buckshot, or slugs and the gas system will cycle cleanly all day. Between the mag-fed reloads, choke versatility, and AR ergonomics, this one earns its spot for range days, training, and home use alike.
Key Specifications
- Model: DY12
- Manufacturer Part Number: DY12.20.CA.US
- UPC: 860012072729
- Gauge: 12 Gauge
- Chamber: 3" (accepts 2-3/4" and 3" shells)
- Action: Gas-Operated Semi-Auto
- Barrel Length: 20", Threaded
- Capacity: 5+1
- Overall Length: 38"
- Weight: 8.27 lbs
- Receiver Material: Forged 7075-T6 Aluminum
- Finish: Black Anodized
- Sights: Flip-Up Front and Rear
- Stock: Fixed with Mil-Spec Pistol Grip
- Handguard: M-LOK Compatible
- Choke Tubes: Improved Cylinder, Modified, Full
What’s Included
- Derya DY12 12 Gauge Semi-Auto Shotgun
- 3 Magazines (2-round, 5-round, 10-round extended)
- 3 Mobile Choke Tubes (Improved Cylinder, Modified, Full)
- Premium Soft Case
- Derya Accessory Bag
- Owner's Manual
- Cleaning Cloth
- Earmuffs
- Heavy Piston
- Sling
- Gun Lock
Frequently Asked Questions
What ammo runs best in the Derya DY12?
The DY12 cycles best with quality loads producing muzzle velocities of 1,250 fps or higher. High-brass field loads, full-power buckshot, and slugs all run reliably through the gas system. The 3 inch chamber handles both 2-3/4 inch and 3 inch shells, so you have plenty of options as long as you stick with higher-velocity ammo.
Does the DY12 come with choke tubes?
Yes, it ships with three mobile choke tubes: Improved Cylinder, Modified, and Full. The 20 inch barrel is threaded to accept them, so you can pattern the gun for anything from close-range work to tighter shots without additional purchases.
How many magazines are included with this Derya DY12?
This package includes three magazines: a 2-round, a 5-round, and an extended 10-round mag. All three accept both 2-3/4 inch and 3 inch shells, which makes it easy to match capacity to whatever you're doing that day.
Can I put AR accessories on the DY12?
For the most part, yes. The DY12 uses a mil-spec pistol grip that can be swapped for your preferred AR grip, and the M-LOK handguard and Picatinny rail accept standard lights, optics, and accessories. Keep in mind it's still a proprietary shotgun platform underneath, so not every AR part crosses over, but the common ergonomic upgrades do.



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