Standard Manufacturing DP-12 Gen II 12 Gauge Pump Shotgun 18.8in
About this product
The Standard Manufacturing DP-12 Gen II 12 Gauge Pump Shotgun is a double-barreled, pump-action firearm engineered for high-capacity engagements in a compact, durable tactical package.
What is the DP-12 Gen II used for?
The DP-12 Gen II is designed for users requiring decisive stopping power and maximum ammunition capacity in close-proximity defensive scenarios where semi-automatic platforms face reliability questions. Its unique inline double-barrel system fires two consecutive 12-gauge shells per pump stroke, offering a 16-round total capacity that significantly outclasses conventional tube-fed shotguns. This architecture, paired with its 18.8-inch barrels, makes it a formidable tool for tactical overwatch, close-quarters defense, and specialized training where shot count and mechanical reliability are prioritized over fast swinging for wing shooting.
How does the DP-12 Gen II compare to the Stevens 555 Sporting O/U?
The DP-12 Gen II is a far more specialized tactical platform, whereas the Stevens 555 Sporting O/U is a dedicated sporting gun designed for upland game or clay targets. The Stevens 555, like the 12-gauge model, excels at traditional shotgunning with its lighter weight, faster handling, and superior balance for swing dynamics, but offers only two rounds before reloading. The DP-12 Gen II is better for demanding high-volume scenarios where its 9.75-pound heft and pump-action operation manage recoil from powerful defensive loads, and its accessory rails allow for modern optics and weapon lights, options not natively present on the smooth-fielded Stevens.
What does it weigh and what are the dimensions?
Unloaded, the DP-12 Gen II weighs 9.75 pounds (156 ounces) and measures 28.5 inches in overall length with its synthetic stock in the standard position. Its dual 18.8-inch barrels are the primary driver of its compactness, keeping the package nearly 6 inches shorter than many conventional 18-inch-barreled shotguns that must also account for a long magazine tube. With an unweighted synthetic stock, the balance point sits 3.7 inches forward of the receiver, which aids in controlling muzzle rise during rapid double-taps but can feel muzzle-heavy compared to a traditional sporting gun during extended carry.
Who is this NOT for?
This shotgun is not for the casual plinker, the hunter chasing doves, or someone seeking a lightweight home-defense gun. Its 9.75-pound weight, specific manual of arms requiring a firm, full-length pump stroke, and $1,450 price tag place it firmly in the realm of dedicated tools. It’s a poor choice as a first shotgun, a bad fit for hunters who need fast acquisition on moving targets, and its design complexity compared to a simple pump-action like a Mossberg 500 makes it less ideal for someone who prioritizes disassembly ease above all else.
What's in the box?
The firearm ships with two Tru-Choke pattern Spreader choke tubes—one for each barrel—and a dedicated choke wrench. You will receive a standard hard-sided plastic transport case, but do not expect a high-end Pelican-style foam solution. The thermal-coated, machined 7075 aluminum receiver assembly is the centerpiece, mated to the synthetic stock and forend, with all ambidextrous controls factory-installed. Notably absent are any spare parts kits or specialized cleaning tools for the unique dual-magazine tube system, which requires its own maintenance protocol.
Is the DP-12 Gen II worth it at $1,450?
At $1,450, the DP-12 Gen II is worth it if your use-case demands its specific combination of high capacity, mechanical simplicity, and compact durability, and you have trained on its unique action. It is not a cost-effective general-purpose shotgun. You are paying for an overbuilt, proprietary receiver system and a dual-feed mechanism that delivers a capability niche no other production shotgun occupies. For the price of nearly three Stevens 334 rifles, you get a purpose-built force multiplier that ignores trends in favor of brute-force reliability.
Specs at a glance
Video review
Pros & cons
What works
- 16-round total capacity (14+2) — over twice the tube capacity of a standard Mossberg 590.
- Dual 18.8-inch barrels keep overall length to 28.5 inches, nearly 6 inches shorter than many 18-inch tactical shotguns.
- 7075-T6 aluminum receiver with thermal coating provides exceptional durability at a weight of 9.75 pounds.
- Ambidextrous safety and slide release allow operation from either shoulder without modification.
Trade-offs
- Weight of 9.75 lbs unloaded is 3-4 lbs heavier than most tactical pumps, causing fatigue during extended drills.
- Proprietary Tru-Choke threading limits inexpensive aftermarket choke options compared to common RemChoke systems.
- Unique dual-magazine tube system requires a specific, vigorous pump stroke to cycle reliably—fails to feed on short-strokes.
- No included high-security case or comprehensive spare parts kit at its $1,450 price point.
Expert review
Key attributes
| upc | 810115913030 |
| manufacturer | Standard Manufacturing |
| manufacturer part number | DP12 GEN II |
| action | Pump Action |
| barrel length | 18.875" |
| caliber/gauge | 12 Gauge |
| capacity | 14 |
| chokes included | 2 Spreader |
| color | Black |
| length | 41.2500 |
| model | DP-12 |
| safety | Yes |
| shipping weight | 17.0 |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
Frequently asked questions
- Does this work with standard 12-gauge ammunition?
- Yes, the DP-12 Gen II handles standard 2¾-inch and 3-inch 12-gauge shells interchangeably, including buckshot, slugs, and target loads. It will cycle lightweight 1¾-inch mini-shells with occasional feed hiccups due to their shorter length, requiring particular attention during the vigorous pump stroke. For consistent defensive use, I recommend standard-pressure 00 Buck with a high brass base, such as Federal FliteControl, to ensure positive extraction and feeding from both internal magazine tubes.
- Is it compatible with aftermarket chokes?
- Each of its two barrels is threaded for Standard Manufacturing's proprietary Tru-Choke pattern. While not directly compatible with the more common Remington (RemChoke) or Benelli (Crio) systems, the included Spreader tubes are effective for defensive patterning. Carlson's and other specialty manufacturers offer aftermarket Tru-Choke tubes in various constrictions; expect to spend $25-$40 per tube and ensure you purchase a matching pair if you want identical patterns from both barrels.
- How long does shipping to an FFL take?
- Due to its classification as a Title I firearm, orders ship within 2-3 business days after payment and compliance verification, with transit typically taking 3-7 business days via common carriers like UPS or FedEx. You must provide your chosen FFL dealer's contact information and a copy of their license before shipment is processed. Once the firearm arrives at your FFL, you will complete the mandatory ATF Form 4473 and pass a NICS background check before taking possession.
- Can I install a pistol grip or collapsible stock?
- The synthetic stock is a fixed, integral assembly with a co-molded rubber pistol grip; it is not designed for end-user replacement with standard AR buffer-tube adapters. The 18.8-inch barrel length ensures the overall configuration remains Title I compliant without needing to consider NFA SBR regulations, but also limits stock modularity. For accessory mounting, the top Picatinny rail is M1913-spec and will accept optics like Vortex red dots or magnified scopes up to 11 inches in length without interfering with the pump stroke.