DY12
The DY12 is a gas-operated semi-automatic 12-gauge shotgun featuring an upper and lower receiver made from 7075 T6 aluminum. It provides AR-15-like ergonomics and controls, eliminating the need to retrain your mechanics for 3-gun competitions or target shooting. The shotgun is magazine-fed with a 5+1 capacity for 2-3/4” and 3” shells.
Thread Pitch
The DY12 features a metric right-hand thread of M24x1.
Trigger Pull Weight
The trigger pull weight of the DY12 is between 4 and 4.5 kilograms.
Length of pull (LOP)
The length of pull for the DY12 is 14-1/2 LOP.
Rail
DY12 has picatinny rail system. Please note that some fittings may be required.
The DY12 upper receiver: Slots .205” to .208”, Rails .230” to .208”, Width .825”.
The DY12 slots are identical to Picatinny, while prior versions not under DY12 differ slightly where all don't work.
Most single lug sights will go on the rails. If the sights have two lugs the spacing between the slots comes into play and the sights will not go on unless the guns rails are modified.
DY12 Receiver
The DY12 does not have the same receiver width as the AR15 type receivers.
Shooting with bean bag round
DY12 will not shoot with bean bag round.
Shooting Armor Piercing
Using armor-piercing ammunition in the DY12 depends on the load; it must be sufficiently heavy and powerful to operate the action. The gun can handle it, but the functionality of the shot shell is uncertain.
Shooting Steel Shot
Avoid using a full choke when shooting steel shot in the DY12, as it may lead to barrel jamming. Use the appropriate choke, such as Modified or Cylinder.
Barrels
All Derya shotguns, including the DY12, feature chrome-lined barrels. The bore size measures 0.719 inches.
Gas port
The DY12 features a gas port with a diameter of 0.120 inches.
Chokes and sizes
- Full (.680”) - Lead shot only
- Modified (.701”) - Lead and Steel shot only
- Improved Cylinder (.722”) - Will shoot anything including slugs
Safety
When the safety is engaged, the bolt cannot be retracted as it is blocked by the sear.
To remove the DY12 safety, unscrew the set screw and detach the lever.
Barrel Shroud
DY12 barrel shroud is constructed from aluminum. It is not pinned and can be unscrewed, relying solely on the knurling of the shroud and the nylon bushings.
Retaining Screw or Nut thread pitch
The thread in barrel retaining screw of DY12 is M8 x 1.25.
Pistol Grip Screw Size
DY12 grip screw is 6mm x 1.0 thread.
Buttstock Screw Size
DY12 buttstock Screw Size is M6x1, 31 MM long.
Buffer Tube Weight
DY12 Buffer Tube Weight is 1.5oz.
Recoil Spring Weight/Poundage
DY12 Recoil Spring Weight/Poundage is 13lbs +\~ 1lbs .
Handguard Sizes
DY12 factory handguard / Short is 12.5” while the extended handguard is 16.5”.
Optics and Scopes we recommend
Holosun 510c, Vortex Crossfire, SigSauer Romeo5.
Buffer Tube - the Buffer tube is Mil Spec
Forearm grip
We do not offer and not recommend installing a forearm grip as it sometimes block the gas system causing cycling issue.
Machining and Finishing Process
DY12 Barrel is made of 4140 Annealed Extruded Steel. Heat treatment is applied, followed by crack inspection, then drilling, and finally machining.
All Aluminum is 7075. Receiver specifically is machined from a solid block.
All significant components are made in house in our machines.
For finishing, anodizing and melonite is done in our factory in Türkiye. In USA, finishing is done by premium finishing company most other USA companies use.
Frequently Asked Questions for DY12:
Differences between DY12 and VR80 - The DY12 adheres to Mil Spec standards. It features a genuine AR grip, includes QD rings, and comes with a standard Picatinny rail. The DY12 has an adjustable stock, unlike the VR80, which has a fixed stock. It also has distinct packaging and disassembles in a different manner.
How many rounds will the magazine on my Model DY12 hold? The magazine capacity is two, five and ten rounds. But 21 round drum magazine is available in our web shop.
Where is the serial number located? DY12 - The serial number is located on the left side of the upper receiver.
I don't see my firearm, item number, UPC, or color listed for DY12, where is it?
On our website, we only list the type of firearms, as each type might include up to 10 different items. Variations exist due to different color exclusives and varying magazine capacities to comply with state gun laws. Below are all the item numbers, UPCs, and special information: If an item number starts with a number followed by an "L", it indicates a magazine limitation from the standard item. If an item number ends in "US", it means the firearm was Made in the United States. If an item number ends in "TR", it signifies the firearm was made in Türkiye.
| Website Type | Item Number | Short Description | UPC Code | Magazine Used | Finish | Notes | USA MSRP |
| DY12 | DY12.18.US | DY12 12GA 5RD 18" | 860012072705 | 1 D050003, 1 D050004, 1 D050005 | Black Anodized/melonite | $ 999.00 | |
| DY12 | DY12.20.US | DY12 12GA 5RD 20" | 860012072712 | 1 D050003, 1 D050004, 1 D050005 | Black Anodized/melonite | $ 999.00 | |
| DY12 California | DY12.20.CA.US | DY12 CA-MRB 12GA 5RD 20" | 860012072729 | 1 D050003, 1 D050004, 1 D050005 | Black Anodized/melonite | CALIFORNIA COMPLIANT | $ 999.00 |
| DY12Z | DY12Z.95.US | DY12Z 9.5" 12GA 5rd SBS | 860012072736 | 1 D050004, 1 D050005, 1 D055039 | Black Anodized/melonite | NFA ITEM | $ 1,499.00 |
| DY12Y | DY12Y.11.US | DY12Y 12GA 5rd Firearm 11" | 860012072743 | 1 D050004, 2 D050005 | Black Anodized/melonite | OTHER FIREARM | $ 1,499.00 |