The Standard Manufacturing DP-12 is a pump-action shotgun chambered in 12 gauge (3-inch chamber) with a dual-barrel design. Each pump fires one shell from each barrel, so two shells discharge before you need to pump again. Total capacity is 14 rounds in the tubes plus 2 in the chambers. The barrel length is 18.9 inches and overall length is 29.5 inches. This example is finished in Olive Drab Green. 
 

Key Specifications 

• Model: DP-12 
• Manufacturer: Standard Manufacturing Company 
• Action Type: Pump Action 
• Caliber: 12 Gauge (3" chamber) 
• Barrel Length: 18.9 inches 
• Overall Length: 29.5 inches 
• Capacity: 14 rounds (plus 2 in chamber) 
• Finish Color: Olive Drab Green (OD Green) 
• Condition: New in Box 
   

Detailed Features 

• Dual barrel: Two barrels feed from two independent tube magazines. One pump cycles both barrels, so the shooter fires two shots per pump stroke rather than one. This is the defining feature of the platform and what separates it from conventional pump shotguns. 
• High tube capacity: 14+2 rounds means fewer reloads in sustained shooting. 
• Polymer grips: Manage recoil and give a consistent grip surface. 
• OD Green finish: Holds up to handling and field conditions. 
   

Usage Scenarios 

 
The dual-barrel mechanism makes the DP-12 a natural conversation piece at the range and a practical choice for home defense where the 14+2 capacity and rapid double-shot capability reduce reloading frequency. The 18.9-inch barrel keeps it maneuverable indoors. Competitive shooters in speed-based events use it for the same reason.

Community discussion on the Standard MFG DP-12 in OD Green consistently circles around a handful of subjects.

Design appreciation: The dual-barrel setup draws immediate attention. Most users who buy it specifically want that rapid two-shot-per-pump capability, and those shooters tend to be satisfied with how it works in practice.

High capacity: 14+2 rounds gets consistent positive mentions from home defense-oriented buyers who see it as a meaningful advantage over conventional 5- or 8-round pump shotguns.

Weight and bulk: The DP-12 is heavier and bulkier than a standard pump shotgun. This comes up regularly as a downside, especially for users who need to move quickly or store it in a vehicle. It's less maneuverable than a traditional 18-inch-barrel pump in tight spaces.

Reliability: Cycling and feeding reliability is a divided topic. Many owners report no issues; a subset describe feeding problems with certain shell brands or lengths. This pattern is common enough in discussions that prospective buyers often ask about it specifically.

Ergonomics: Controls get mixed reviews. Some find the layout intuitive; others find the grip angle or control placement awkward compared to conventional shotguns, particularly for users coming from Mossberg or Remington pumps.

Price: The DP-12 runs higher than conventional pump shotguns. The price comes up in most threads, with buyers splitting between those who see the dual-barrel system as a fair premium and those who think the same money buys a more practical conventional platform.