The Standard Manufacturing DP-12 is a pump-action 12-gauge shotgun with a 14+2 capacity (16 rounds total), two inline magazines, and an 18.75-inch barrel. At 29.5 inches overall and 9.8 lbs, it is compact but heavy relative to traditional pumps. 
 

Key Specifications 

• Type: Shotgun: Pump Action 
• Model Series: DP12 
• Caliber/Gauge: 12 Gauge 
• Capacity: 14+2 (total of 16 rounds) 
• Barrel Length: 18.75 inches 
• Overall Length: 29.5 inches 
• Weight: 9.8 lbs. 
• Safety: Manual Safety 
• Chamber Length: 3 inches 
• Frame Finish: OD Green 
• Material Frame: Aluminum 
   

Detailed Features 

 
The dual inline tube magazines are the defining feature. Each pump stroke fires both barrels sequentially, which lets you work through 16 shells without a reload. The ambidextrous safety and pump slide release work the same from either side. 
 
The Tru-Choke multi-choke system lets you adjust shot patterns depending on use, tighter for hunting, wider for defense. The aluminum receiver and synthetic stock keep weight down to a degree, though 9.8 lbs is still notable for a pump gun. A black rubber recoil pad is fitted at the stock. The built-in Picatinny rail accepts standard optics and accessories.

The DP-12 Gen 2 draws a lot of attention for its 16-round capacity and dual-magazine layout, which is genuinely unusual in the pump-action category. Users interested in high-capacity home defense and competitive formats respond well to those specs.

Ergonomics get broadly positive marks. The OD Green model handles balanced for most shooters despite the weight, and the ambidextrous controls work as described. The weight (9.8 lbs) is a real-world trade-off that divides opinion: some value the stability it provides while shooting; others find it tiring on extended range days or during transport.

Reliability reports are mixed. A portion of users run it without issues, but feeding problems and occasional jams with certain ammunition loads appear in enough discussions to be worth noting before buying. Price relative to conventional shotguns with established track records comes up often. Opinions vary on whether the dual-magazine design justifies the premium.

Customization via the Picatinny rail is mentioned positively. Buyers are generally advised to test with several ammunition types before settling on a load.