Dark Mountain Stowaway Handgun 9mm Luger Single Shot 5″ 1/2×28 Threaded Barrel Black with Brace Adapter

Description

The Dark Mountain Stowaway Handgun 9mm Luger Single Shot 5” 1/2×28 Threaded Barrel Black with Brace Adapter is a purpose-built survival tool, not a range toy. This single-shot pistol gives you a compact, packable 9mm platform with a threaded barrel for suppressor use and a factory brace adapter to stabilize your shots. Dark Mountain designed this for the shooter who needs one reliable round on tap, not a magazine-fed race gun. Whether you’re packing it as a truck gun, a backup for hunting, or a discreet option for your go-bag, the Stowaway delivers exactly what it says: one shot, exactly where you need it.

Manufacturer	Dark Mountain (per manufacturer specs)
Model	Stowaway
Material	Steel barrel and receiver, polymer grip (per manufacturer specs)
Compatibility	9mm Luger ammunition, 1/2×28 threaded suppressors and muzzle devices, aftermarket braces with adapter
Finish	Black oxide barrel, black polymer frame (per manufacturer specs)
Weight	Approximately 1.2 lbs unloaded (per manufacturer specs)
Condition	New

Key Features

• Threaded 5” Barrel (1/2×28): Why it matters: You can attach a suppressor or compensator to reduce noise and muzzle rise, making this single-shot more practical for training or pest control.
• Integrated Brace Adapter: Why it matters: Add a stabilizing brace for better one-handed or braced shooting, turning a minimalist pistol into a more accurate platform without permanent modification.
• Single-Shot Action: Why it matters: Simple, reliable, and easy to maintain—no feeding issues, no magazine springs to fail, just load and fire. Ideal for new shooters learning fundamentals.
• Compact and Lightweight: Why it matters: At just over a pound, it stows easily in a pack, glovebox, or survival kit without weighing you down.
• 9mm Luger Chambering: Why it matters: Common, affordable ammunition that’s effective for self-defense and training—you’ll find it at any gun store.

Who It’s For

This handgun is for the practical shooter who values simplicity and portability over capacity. New shooters will appreciate the single-shot focus on marksmanship. Survivalists and backpackers want a lightweight backup that doesn’t rely on magazines. Instructors teaching fundamentals can use it to force students to make every shot count. It’s also a solid choice for anyone needing a discreet truck gun or a suppressor host for quiet training.

Pros and Cons

• Pros: Lightweight at 1.2 lbs; threaded barrel for suppressor use; brace adapter included; simple, reliable single-shot action; affordable price point under $410.
• Cons: Single-shot capacity means no follow-up shot without reloading; no iron sights included (you’ll need to add optics or sights).

Comparison

Feature	Dark Mountain Stowaway	Zev Technologies OZ9	Agency Arms G17 Build
Action	Single shot	Semi-auto	Semi-auto
Capacity	1 round	17+1	17+1
Weight	1.2 lbs	1.6 lbs	1.5 lbs
Barrel Length	5” threaded	4.5” threaded	5.2” threaded
Brace Adapter	Included	No	No
Price	$400.89	$1,200+	$800+
Best Use	Survival/backup	Competition/duty	Duty/competition

Frequently Asked Questions

Can I use this with a suppressor?

Yes. The 5” barrel is threaded 1/2×28, which is the standard thread pitch for 9mm suppressors. Just make sure your suppressor is rated for 9mm and the barrel is clean before attaching.

Does it come with a brace?

No, the Stowaway includes a factory brace adapter, but you’ll need to purchase a compatible stabilizing brace separately. The adapter lets you attach most AR-style pistol braces.

Is this legal to carry?

As a single-shot handgun, it’s generally legal in most states, but check your local laws regarding barrel length and brace attachments. The threaded barrel may require additional compliance in some jurisdictions.

How do I load and unload it?

Break open the action by pulling the barrel release, insert a single 9mm round into the chamber, close the barrel, and fire. To unload, open the action and remove the round or eject the spent casing.

Final Verdict

The Dark Mountain Stowaway Handgun 9mm Luger Single Shot 5” 1/2×28 Threaded Barrel Black with Brace Adapter is a niche tool that excels at its job: providing a dependable, portable single-shot platform. It’s not for everyone, but if you need a lightweight backup or a suppressor host that won’t break the bank, this is a solid choice. According to Dark Mountain specs, the 5” barrel gives you enough velocity for reliable expansion with defensive ammo, and the brace adapter adds stability without permanent changes. One honest drawback: the lack of sights means you’ll need to budget for an optic or aftermarket sights. For under $410, it’s a practical addition to any kit.

✓ Nationwide delivery (all 50 states)
✓ Ships 1-2 business days
✓ 30-day returns
✓ Secure checkout

Explore more options: Single Shot Handguns, 9mm Pistols, Survival Gear

Last updated: April 2026