Dark Mountain Arms Stowaway | 9mm | 5″ Threaded Barrel

The Dark Mountain Arms Stowaway is a large-format single-shot bolt-action pistol configured for 9mm and built for modularity and compact storage. The removable barrel allows the pistol to be shortened for packing or swapped for a different caliber with only a bolt face and barrel change. It is optics-ready via a Picatinny rail and features a threaded muzzle for accessories. Consider pairing this platform with a compact 1x red dot such as the Vortex Venom for rapid sight acquisition under $1000.

Product Specifications

• The manufacturer is Dark Mountain Arms.
• The model is the Stowaway Single-Shot Pistol.
• The caliber is specified as 9mm.
• The action type is Bolt Action.
• The barrel measures 5 inches and is removable for compact storage.
• The muzzle is threaded 1/2×28 for suppressor-ready accessories.
• The pistol accepts 1 round (single-shot capacity).
• The firearm is fitted with an optics-ready Picatinny rail.
• The primary materials are listed as Aluminum, Steel, and Glass-Filled Nylon.
• The finish is Black.
• The firearm features a Single Action safety with a half-cock position.
• Length with the barrel detached is 7.1 inches, and firing length with the barrel attached is 11.5 inches.
• The overall height is 6.88 inches and thickness is listed as <2.0 inches.
• Caliber conversion is supported and is described as achievable with a bolt face and barrel change.
• The UPC is 850061930033.

The Stowaway is designed for shooters who value packability and straightforward mechanical design. Its removable barrel and simple bolt-action mechanism make it well suited to precision single-shot target work and for users who need a compact tool for backcountry or survival carry. The Picatinny rail and threaded muzzle enable customization without altering the core platform.