Dark Mountain Arms Stow Away 5.7X28Mm 5 Brace

The Dark Mountain Arms Stow Away 5.7x28mm bolt-action pistol with brace adapter is built for shooters who demand modularity without compromise. This single-shot platform combines a compact footprint with field-swappable components—the removable barrel collapses the overall length to just 7.1 inches when detached, making it genuinely pack-friendly for overlanders, backcountry hunters, or anyone who values space-efficient firepower. The 5.7x28mm cartridge delivers rifle-like velocity in a pistol platform, ideal for varmint work or specialized shooting applications where conventional handgun rounds fall short.

Built from aluminum, steel, and glass-filled nylon with a corrosion-resistant finish, the Stow Away is engineered to take a beating. The bolt-action design is inherently reliable and precise—no gas system, no moving parts beyond the bolt itself. A 1913 Brace Adapter comes equipped for mounting a foldable brace (sold separately; ensure your setup complies with current NFA regulations). The 1/2x28 threaded muzzle is suppressor-ready, opening options for quieter shooting. Swap calibers on the fly by changing just the bolt face and barrel—the true modular advantage for shooters who want one frame, multiple configurations.

An optics-ready Picatinny rail sits atop the receiver, so you can mount a quality sight or scope without gunsmithing. At 2 pounds and under 2 inches thick, weight and profile stay minimal. The single-action safety with half-cock position provides manual control without fuss. Designed, manufactured, and backed by a veteran-owned operation stateside, the Stow Away is purpose-built for the shooter who refuses to compromise between portability, power, and reliability.

Key Features

• Removable barrel for compact stowage (7.1 inches barrel-off; 11.5 inches ready to fire)
• Bolt-action single-shot design for reliability and precision
• Field-swappable barrel and bolt face for easy caliber conversion
• 1913 Brace Adapter ready (brace not included)
• 1/2x28 threaded muzzle—suppressor compatible
• Optics-ready Picatinny rail for sight mounting
• Lightweight aluminum, steel, and GF nylon construction with corrosion-resistant finish
• Made in USA by veteran-owned manufacturer

Specifications

Frequently Asked Questions

Is the brace included with this pistol?

The 1913 Brace Adapter is included, allowing you to mount a compatible foldable brace. The brace itself is not included and must be purchased separately. Remember that all NFA regulations apply to your final configuration.

Can I swap calibers on this platform?

Yes. The Stow Away is designed for easy caliber conversion by swapping the barrel and bolt face. This makes it a genuinely versatile single-shot platform if you want to explore different cartridges down the road.

How compact does this get when broken down?

With the barrel detached, the Stow Away measures just 7.1 inches in overall length—small enough to fit into a pack or vehicle storage without eating up space. Reassembly is straightforward and takes moments.

Can I mount an optic on this pistol?

Yes. The Stow Away features an optics-ready Picatinny rail on top of the receiver, making it straightforward to mount a red dot, prism sight, or other compatible optic.