Standard Manufacturing DP-12
The Standard Manufacturing DP-12 is unlike any other shotgun on the market — a double-barreled, pump-action, bullpup 12 gauge that fires two rounds with each pump cycle and holds 16 rounds across its twin tube magazines. Each pump loads both barrels simultaneously, and two sequential trigger pulls fire each barrel in turn. The result is a genuinely unique platform that delivers twice the firepower per pump stroke of any conventional pump-action shotgun.
Read our full Standard Manufacturing DP-12 Buying Guide ↓
Double-Barrel Pump-Action: How the DP-12 Works
The DP-12’s operating principle is straightforward once you see it: one pump stroke loads both barrels from the twin tube magazines, then two trigger pulls fire them sequentially — left barrel, then right barrel. Pump again, two more rounds loaded, two more trigger pulls. This gives the DP-12 an effective rate of fire roughly double a conventional pump shotgun, with 16 rounds on tap (8 per tube in the standard model, 7 per tube in the Gen II) before needing to reload.
DP-12 Variants: Standard and Gen II
The standard DP-12 holds 16 rounds (8 per tube) with an 18.8” barrel, available in black, flat dark earth, OD green, and desert tan finishes. The DP-12 Gen II refines the design with a slightly longer 18.87” barrel, updated internals, and a 14-round capacity (7 per tube). Both share the same double-barrel bullpup concept and general footprint.
DP-12 for Home Defense: Maximum Firepower in Minimum Space
The DP-12’s combination of 16-round capacity, double-barrel output, and bullpup compactness makes it one of the highest-firepower home defense shotguns available in a maneuverable package. The tradeoff is weight — two barrels and 16 rounds of 12 gauge shells make the DP-12 heavier than a single-barrel bullpup — and the unique manual of arms requires practice to run smoothly. For buyers who specifically want maximum 12 gauge firepower in a compact layout and are willing to train on the platform, the DP-12 has no direct competitor.
Frequently Asked Questions: Standard Manufacturing DP-12
How many rounds does the DP-12 hold?
The standard DP-12 holds 16 rounds (8 per tube). The Gen II holds 14 rounds (7 per tube).
How does the DP-12 fire?
One pump loads both barrels. Two sequential trigger pulls fire each barrel in turn — left, then right. Each pump cycle loads two fresh rounds.
Is the DP-12 a bullpup?
Yes. The DP-12 uses a bullpup layout with the action behind the trigger group, keeping overall length compact despite its twin barrels.
What finishes is the DP-12 available in?
Black, flat dark earth, OD green, and desert tan.
See Also: Standard Manufacturing • Bullpup Shotguns • Pump Shotguns