Standard Manufacturing DP-12 12 Gauge Pump-Action Bullpup, Double-Barrel, 18.9 Inch, 15+1, Black
The Standard Manufacturing DP-12 is a double-barrel, pump-action bullpup shotgun built in the United States and known for its twin magazine tubes, bottom ejection, and single trigger with sequential discharge. This example features 18.9 inch 4140 steel barrels threaded for removable choke tubes, a full-length MIL-STD-1913 top rail, and a compact 29.5 inch overall length (factory spec). Markings include US Patent 9,115,954, and the model earned the NRA Golden Bullseye Award in 2017.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Specific Condition Notes: This firearm is in great shape overall. The exterior shows minor scratches and small blemishes from prior handling.
What’s Included
- Original factory carton (DP-12)
- Owner's manual
- Wrench
This DP-12 combines a side-by-side double barrel with twin magazine tubes in a bullpup layout, delivering compact handling without sacrificing capacity. Bottom ejection keeps spent shells clear of the action, and the single trigger fires each barrel sequentially.
The shotgun offers a 15+1 capacity and a 29.5 inch overall length (factory spec), pairing high on-board ammunition with a short form factor. An AR-style rotary safety with a clear FIRE/SAFE selector and a pump forend with an integral vertical foregrip support confident, controlled operation.
Its 18.9 inch barrels are made from 4140 steel and are threaded for removable choke tubes, while the receiver is machined from billet aluminum. The fixed black polymer stock includes a recoil pad, and the black finish ties the package together for a uniform, duty-style appearance.
A full-length MIL-STD-1913 top rail runs the shotgun's spine for accessory mounting. This model is marked with US Patent 9,115,954 and is made in New Britain, Connecticut, USA. The DP-12 received the NRA Golden Bullseye Award in 2017, underscoring its distinctive engineering and execution.

