Dark Mountain Arms Stow Away 5.7X28Mm 5 Pistol

The Dark Mountain Arms Stow Away 5.7X28mm bolt-action pistol is built for shooters who value modularity and portability. This single-shot platform prioritizes two things most pistol designs don't: a removable barrel for genuine packability, and the ability to swap calibers without swapping the whole gun. At just 2.0 lbs and collapsing to 7.1 inches when the barrel is detached, the Stow Away lives up to its name—genuinely stow-able in a pack, vehicle, or deep-carry setup where a conventional handgun is just too long.

The 5.7X28mm chambering pairs compact carry with usable velocity and low recoil, making it a natural fit for anyone exploring the 5.7 ecosystem. The 1/2x28 threaded muzzle comes suppressor-ready out of the box, and the optics-ready Picatinny rail on top means you can mount a red dot, low-power scope, or backup sights without adapters. The bolt-action trigger with half-cock safety favors deliberation over speed—think backup, camping, or specialized roles rather than defensive work.

Dark Mountain Arms built this in the USA and stands behind it as a veteran-owned operation. The aluminum, steel, and reinforced nylon construction uses a corrosion-resistant finish designed to handle field use. If you want to add a stock and register it as a short-barrel rifle, Dark Mountain offers an SBR kit; just account for NFA paperwork and your local jurisdiction. Caliber changes are straightforward—swap the bolt face and barrel, and you're ready to shoot a different cartridge on the same lower.

Key Features

• Removable barrel reduces overall length to 7.1 inches for compact storage and transport
• Bolt-action design with half-cock safety
• 1/2x28 threaded muzzle ready for suppressors
• Picatinny rail for optics mounting
• Interchangeable barrel and bolt-face design for easy caliber conversion
• Lightweight at 2.0 lbs for backpack or vehicle carry
• Made in the USA by a veteran-owned manufacturer
• SBR conversion kit available (NFA compliant)

Specifications

Frequently Asked Questions

Is the Dark Mountain Arms Stow Away suppressor-ready?

Yes. The pistol ships with a 1/2x28 threaded muzzle, which is the standard thread pitch for most 5.7X28mm suppressors. You'll need your suppressor to be separately acquired and registered if required by law.

Can I convert this to a different caliber?

Yes. Caliber swaps require changing the bolt face and barrel. Dark Mountain Arms designed the platform specifically for this kind of modularity, so you're not locked into 5.7X28mm if you want to explore other options later.

What's included with the SBR conversion?

Dark Mountain offers an SBR kit separately to add a stock and convert the Stow Away into a short-barrel rifle configuration. Be aware that any SBR build requires NFA registration and compliance with federal and local firearms laws.

What comes standard on this pistol?

You get the action, barrel, and Picatinny rail for mounting optics. The threaded muzzle is installed and ready for a suppressor. No sights or optics are included—mount your own to the rail.