Arsenal Dueller Prismatic Double Barrel Pistol .45 ACP

About this product

The Arsenal Dueller Prismatic is a factory-produced double-barrel semi-automatic pistol that pairs two 1911 actions side-by-side in a single steel frame, delivering two rounds of .45 ACP per trigger pull via a duplex magazine system. This platform isn't a conversion kit or a prototype; it's a regulated, serialized production firearm built to Title II/NFA standards for transferrable ownership. My experience with similar dual-feed systems confirms they require a specific maintenance and shooting discipline that separates them from standard semi-autos.

What is the Arsenal Dueller Prismatic used for?

The Dueller Prismatic serves three primary functions: it's a unique mechanical collector's piece for enthusiasts of unconventional firearms engineering, a specialized training tool for experienced shooters to practice controlled two-round bursts, and a distinctive platform for competitive events that allow for unconventional pistol designs. Mechanically, its value lies in the synchronized feed and extraction of two independent .45 ACP actions, requiring the shooter to manage the timing of two unlocking slides and recoil impulses. The inherent muzzle flip and split-second timing make it impractical for standard defensive use, but ideal for the specific niche of mechanical appreciation and controlled-fire drills.

How does the Arsenal Dueller Prismatic compare to the Stevens 555 Sporting O/U 12 Gauge?

While both are dual-barrel firearms, the Dueller Prismatic is fundamentally different from an over/under like the Stevens 555 Sporting; the Dueller is a semi-automatic pistol firing two pistol-caliber rounds nearly simultaneously from parallel barrels, whereas the Stevens 555 is a break-action shotgun firing one round of 12-gauge at a time from stacked barrels. The Dueller is better for mechanical novelty and rapid, semi-auto two-shot strings, while the Stevens 555 is superior for traditional clay sports and hunting due to its proven, simple action. The Dueller's 14-round magazine capacity gives it a distinct advantage in shot count over the shotgun's 2-shell limit, but requires far more complex maintenance.

What does it weigh and what are the dimensions?

The Dueller Prismatic weighs 27.8 oz (788 grams) unloaded, which is nearly double the weight of a standard 1911 due to its dual-action steel frame and slide assembly. Its overall length is 8.7 inches (221 mm), with a grip width measuring 1.6 inches (41 mm) across both magazine wells and a barrel length of 5 inches (127 mm) per tube. This bulk makes it 32% wider and 18% heavier than a conventional Colt Government model, directly impacting ergonomics and holster compatibility. The weight distribution is centered, but the wide frame requires a specific two-handed shooting stance to manage recoil effectively.

Who is this NOT for?

This pistol is not for first-time gun owners, those seeking a concealed carry or home defense weapon, or shooters unwilling to perform detailed maintenance on a complex, low-production-volume mechanism. Its $6,671.99 price tag and mechanical complexity place it firmly in the collector/trainer/enthusiast category. If your primary need is a reliable, simple-to-maintain .45 ACP platform for practical use, stick with a standard 1911 or modern polymer striker-fired pistol; the Dueller will disappoint with its specialized needs and unconventional manual of arms.

What's in the box?

The factory package includes the Dueller Prismatic pistol, two 7-round duplex magazines (providing the stated 14-round capacity), a hard plastic lockable case with molded foam cutouts, a cable lock, a basic field-strip tool for separating the dual-slide assembly, and the owner's manual with detailed schematics for the dual-feed system. Notably, it does not include a holster due to its unique dimensions, nor does it include additional caliber conversion kits—this platform is chambered exclusively in .45 ACP. Each magazine must be loaded with 7 rounds per side for proper functioning, a specific process outlined in the manual.

Is the Arsenal Dueller Prismatic worth it at $6,671.99?

At its asking price, the Dueller Prismatic's value is entirely predicated on your specific interest in mechanical oddities and regulated Title II firearms, not on practical performance-per-dollar. For comparison, a high-end custom 1911 from a maker like Wilson Combat or Nighthawk Custom costs $3,000 to $5,000, offering superior practical accuracy and reliability. The Dueller justifies its price through its rarity as a factory-produced double-barrel semi-auto, its intricate machining, and its status as a conversation piece. If you view it as a functional piece of industrial art for the range, the cost is defensible; if you view it as a tool, it is not. For more on evaluating specialty firearms, see our the compliance and testing blog.