Description

Dark Mountain Arms Stowaway Chassis (9×19 Compatible) | Lightweight Ergonomic M-LOK Upgrade

Meet the Stowaway Chassis—a compact, ultra-light chassis designed for the 9×19 version of the Dark Mountain Arms Stowaway that makes the platform more ergonomic, more configurable, and faster to run. At only 6 oz and 10″ long, it adds M-LOK accessory mounting, AR-grip compatibility, an ergonomic charging handle, and on-board storage for a full-size Glock magazine positioned near the chamber area for quicker reloads. workflows.

Built for better handling—without adding bulk

The 9×19 Stowaway becomes noticeably easier to control when the touchpoints are right. This chassis improves comfort, leverage, and accessory flexibility while staying extremely compact—so you gain capability without turning the platform into something it isn’t.

The big win: reload workflows where you need it

A standout feature is the integrated magwell for a full-size Glock magazine located near the chamber area. Instead of digging for a spare, you can keep your ammo on the chassis—supporting quicker reloads and smoother follow-up shots.

Configure it to your grip and your setup

Because it accepts AR-pattern grips (flat top or large beavertail), you can tune the feel to your hand size and preferred angle. Add M-LOK accessories on the fore end to finish the setup—hand stop, light, laser, or other compatible attachments.

Charge the bolt—comfortably

The included charging handle gives you a more ergonomic, consistent way to cock the bolt—especially helpful during repetitive training cycles or when running the platform with gloves.

Specifications

• Overall length: 10″
• Assembled weight: 6 oz
• Accessory mounting: M-LOK slots on fore end
• Grip interface: AR-pattern grips (flat top or large beavertail)
• Reload support: Stores one full-size Glock magazine near chamber area
• Charging support: Charging handle included

Installation Guide:

Watch this brief video for step-by-step installation, charging handle setup, and a quick fit/function check before use.

 Installation video can be found here