The Standard Mfg DP-12 is a pump-action shotgun built around a dual magazine tube system that holds 14+2 rounds of 12-gauge ammunition. That 16-round capacity is the defining feature — two tubes feed alternately, cutting reload time compared to a single-tube design. 
 

Key Specifications 

• Action: Pump Action 
• Barrel Length: 18.88 inches 
• Capacity: 14+2 rounds 
• Gauge: 12 GA 
• Weight: 9.75 lbs. 
• Finish: Black 
• Chamber Length: 3 inches 
   

Features 

 
The dual magazine tubes are the heart of the design: 14 shells split across two tubes plus two in the chambers means you can keep firing longer before a reload stop. The fixed stock keeps the platform stable and gives a consistent cheek weld shot to shot. 
 
The receiver is aluminum — light enough to keep handling reasonable at 9.75 lbs total, durable enough for regular range use. A thermal-coated black finish protects against rust and wear. The top rail is optic-ready, so mounting a red dot or reflex sight requires no gunsmithing. 
 
The DP-12 fits home defense and competitive shotgun sports where round count and follow-up speed matter. At 9.75 lbs it is heavier than most pump guns, so that trade-off against capacity is worth considering before purchase.

Owners of the DP-12 tend to focus on a few recurring topics.

The dual-magazine system gets the most attention — shooters appreciate the 16-round capacity and faster follow-up capability compared to conventional pump designs. The optic-ready rail is commonly mentioned as a useful addition for those who want to run a red dot.

Build quality feedback leans positive. The gun feels solid and well-assembled out of the box, which gives shooters confidence in its durability. That said, weight comes up consistently as a practical concern: at 9.75 lbs, it is noticeably heavier than a standard pump shotgun, and that affects handling during extended sessions.

Recoil opinions split. Some find it manageable given the gun's mass; others note that 12-gauge recoil is still 12-gauge recoil regardless of the platform. A handful of early owners reported feeding hiccups during initial break-in or with certain ammunition loads, though most found those issues resolved once they settled on a compatible shell.

Pricing draws mixed takes — some consider it fair given the capacity and construction; others find it steep relative to conventional pumps. Overall, the DP-12 attracts buyers specifically interested in the dual-tube concept rather than shoppers looking for the lightest or cheapest option in the pump-action category.