Description
The Dark Mountain Arms Stowaway Handgun in 5.7×28 is a single-shot, large-format bolt-action pistol built for shooters who need a packable, suppressor-ready platform that can swap calibers with a barrel and bolt face change. Featuring a 5″ barrel with 1/2×28 threading, a 1913-style brace adapter, and an optics-ready Picatinny rail, this black-finished pistol is made in the USA by a veteran-owned company. Priced at $400.89, the dark mountain arms stowaway handgun 5.7×28 single shot 5″ 1/2×28 threaded barrel black with brace adapter is the most versatile single-shot handgun on the market today.
| Manufacturer | Dark Mountain Arms |
|---|---|
| Model | Stowaway Handgun |
| Material | Aluminum alloy receiver, steel barrel (per manufacturer specs) |
| Compatibility | 5.7×28 caliber; accepts AR-style grips and 1913 brace adapters |
| Finish | Black anodized |
| Weight | Approximately 1.8 lbs (per manufacturer specs) |
| Condition | New |
Key Features
- Removable Barrel for Compact Storage – WHY IT MATTERS: You can quickly remove the 5″ barrel to reduce overall length, making the Stowaway easy to pack in a backpack or range bag without a bulky case.
- 1913-Style Brace Adapter – WHY IT MATTERS: Add a folding brace (all NFA laws apply) for improved stability and one-handed shooting, turning this single-shot into a compact carbine-style platform when legal.
- 1/2×28 Threaded Muzzle – Suppressor Ready – WHY IT MATTERS: The standard 1/2×28 thread pattern accepts most 5.7 suppressors and muzzle devices, letting you run quiet without adapter hassle.
- Easy Caliber Swap – WHY IT MATTERS: Switching from 5.7×28 to another caliber requires only a barrel and bolt face change, giving you multiple firearm options from one frame.
- Optics-Ready Picatinny Rail – WHY IT MATTERS: Mount a red dot, reflex sight, or scope directly to the rail for precision shooting at distance.
Who It’s For
The Stowaway is built for survivalists, backpack hunters, and shooters who value modularity over magazine capacity. If you need a lightweight, packable pistol that can suppress easily and swap to other calibers, this is your rig. It also appeals to collectors who want a unique, American-made single-shot with modern features.
Pros & Cons
- Pro: 1/2×28 threaded barrel works with nearly all 5.7 suppressors – no proprietary parts.
- Pro: Caliber swap requires only two components, reducing cost for multi-caliber setups.
- Pro: Made in USA by a veteran-owned company, supporting domestic manufacturing.
- Con: Single-shot action limits follow-up speed compared to semi-auto pistols like the PSA Rock or Ruger 57.
Comparison
| Feature | Dark Mountain Arms Stowaway | Zev Technologies OZ9 | Agency Arms Agency 5.7 |
|---|---|---|---|
| Action | Single-shot bolt action | Semi-auto striker | Semi-auto striker |
| Barrel Length | 5″ | 4.5″ | 5″ |
| Threading | 1/2×28 | 1/2×28 | 1/2×28 |
| Caliber Swap | Yes (barrel + bolt face) | No | No |
| Weight | ~1.8 lbs | ~1.5 lbs | ~1.7 lbs |
| Price | $400.89 | ~$1,200 | ~$1,500 |
| Brace Adapter | 1913 included | Requires aftermarket | Requires aftermarket |
FAQ
Does this pistol require an NFA stamp to use a brace?
Yes. Adding a folding brace to the 1913 adapter may classify the firearm as a short-barreled rifle under current ATF rules. All NFA laws apply – consult your legal counsel before assembly.
Can I change the barrel to a different caliber easily?
According to Dark Mountain Arms specs, caliber swaps require a barrel change and a corresponding bolt face. No gunsmithing is needed for most conversions.
What optics fit the Picatinny rail?
The rail accepts any standard Picatinny-mount red dot, reflex sight, or compact scope. It’s compatible with brands like Trijicon, Holosun, and Sig Sauer.
Is the barrel threaded for a suppressor?
Yes – the 1/2×28 threaded muzzle is suppressor-ready. Use any 5.7×28-rated suppressor with the same thread pitch.
How long does shipping take?
We ship within 1-2 business days to all 50 states. Check local laws for firearm delivery restrictions.
Get the Dark Mountain Arms Stowaway Handgun
This single-shot pistol delivers modularity and precision at a price that beats most custom builds. With a removable barrel, brace adapter, and suppressor-ready muzzle, it’s ready for your next adventure. Order now and experience the versatility of a truly packable handgun.
✔ Nationwide delivery (all 50 states)
✔ Ships 1-2 business days
✔ 30-day returns
✔ Secure checkout
Browse more: Single Shot Handguns | 5.7×28 Ammo | Suppressors
Last updated: April 2026 – According to industry data, single-shot pistol sales grew 12% in 2025, driven by modular designs like the Stowaway.
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