Description

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

The MK Machining Dark Mountain Arms Stowaway Utility Chassis is a lightweight, purpose-built upgrade for the 9×19 Stowaway, designed to improve ergonomics, configurability, and overall handling while adding convenient onboard magazine storage.

Built for Better Handling

The Stowaway is compact by design, and the right touchpoints can make a meaningful difference in how it handles. The Utility Chassis improves comfort, control, and accessory flexibility while maintaining the compact character of the platform.

Integrated Magazine Storage

The defining feature of the Utility Chassis is its integrated storage for a full-size Glock-pattern magazine positioned near the chamber area. This keeps a spare magazine directly on the setup for quick, convenient access when needed.

Configure It Your Way

The Utility Chassis accepts compatible AR-pattern grips, including flat-top and large-beavertail designs, so you can tailor the grip profile and angle to your preference.

Integrated M-LOK slots along the fore-end provide mounting space for compatible accessories and additional setup flexibility.

Stowaway Charging Handle Included

Every Utility Chassis includes our MKM Stowaway Charging Handle, which replaces the compact factory rear cocking piece with a larger, more ergonomic interface for easier manual operation.

Installation Guide:

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

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