Dark Mountain Stowaway Rifle, 9mm Luger, 16.65-Inch Threaded Barrel

The Dark Mountain Stowaway (Dark Mountain part no. SA-120) is a single-shot, take-down rifle chambered in 9mm Luger, built around a detachable 16.65-inch barrel that lets the whole gun break down to less than 17 inches for backpack storage. Dark Mountain Arms designed the Stowaway as an ultralight, packable rifle rather than a handgun, with a bolt face and barrel swap system that lets owners change calibers without a gunsmith. The barrel is threaded 1/2×28 for a suppressor, and a Picatinny rail up top keeps the platform optics-ready. Backpackers, campers, and truck-gun owners who want a genuinely packable, single-shot rifle pick the Stowaway for its take-down design.

Key Specifications

• Chambered in 9mm Luger.
• Single-shot 1-round capacity.
• Barrel measures 16.65 inches and is fully detachable for take-down storage.
• Breaks down to less than 17 inches when taken down.
• Barrel is threaded 1/2×28 for a suppressor.
• Caliber swaps are done with just a bolt face and barrel change.
• Fitted with an optics-ready Picatinny rail.
• Ships at approximately 4.2 pounds.
• Finished in black.
• Made in the USA.

Frequently Asked Questions

Is the Stowaway a rifle or a handgun? The manufacturer explicitly markets and names this as a rifle, with a 16.65-inch barrel well beyond typical handgun length, not a handgun, even though it is shopped alongside compact single-shot platforms for its take-down size.

Does the barrel detach for storage? Yes, it takes down to under 17 inches for backpack carry.

Can I change calibers on this platform? Yes, with just a bolt face and barrel swap.

Buy the Dark Mountain Stowaway Rifle

Pick up this packable take-down rifle from Dark Mountain Arms. Browse more in our single-shot handguns selection, and order from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.