Die Free Co Llc DOSBOOTCOYOTE Dos Boot +2 Coyote Brown Compatible w/Magpul PMAG Gen M3 Magazines, 3 Pack

The Die Free Co Dos Boot +2 magazine extension is a purpose-built baseplate upgrade designed to add capacity and functionality to your Magpul PMAG Gen M3 magazines. This three-pack of Coyote Brown extensions transforms your standard AR-15 mags into more capable platforms—adding two rounds per magazine while doubling as a monopod for prone stability and offering a better grip surface for faster, smoother reloads. It's the kind of no-nonsense gear upgrade that works as hard as you do.

Die Free Co engineered the Dos Boot with 20-round magazines in mind, sizing it to keep your rifle's lower receiver clear of dirt when shooting prone. The result is a low-profile extension with genuine utility: the aggressive tread pattern locks against your shooting surface, the contoured shape facilitates smooth transitions between positions, and the textured grip makes mag changes more confident under stress. Tool-free installation means you drop it in place and forget about it—no gunsmithing required.

While optimized for 20-rounders, the Dos Boot plays well across the PMAG Gen M3 lineup, fitting 10, 30, and 40-round variants without compromise. Each extension is molded from impact-resistant polymer, built to handle the realities of field use, and made here in the USA. Whether you're running a precision rifle build, setting up a duty carbine, or just looking to squeeze more utility from your existing magazines, this is a straightforward upgrade that does exactly what it promises.

Key Features

• Adds +2 rounds of magazine capacity
• Doubles as a monopod for prone shooting stability
• Aggressive tread pattern for positive ground contact
• Tool-less, drop-in installation—no modifications needed
• Contoured, ergonomic shape for smooth position transitions
• Impact-resistant injection-molded polymer construction
• Compatible with Magpul PMAG Gen M3 in 10, 20, 30, and 40-round capacities
• Made in the USA

Specifications

Frequently Asked Questions

Will the Dos Boot +2 fit my PMAG Gen M3 magazines?

Yes. The Dos Boot is compatible with Magpul PMAG Gen M3 magazines in 10, 20, 30, and 40-round capacities. Installation is tool-free—simply drop it in place as a replacement baseplate.

What's the real advantage of using this as a monopod?

The Dos Boot was specifically designed with prone shooting in mind. Its low profile and aggressive tread pattern keep your magazine—and your rifle—stable and off the dirt when you're lying flat, while the contoured shape allows smooth transitions between shooting positions without hangups.

Is this a permanent modification?

No. The Dos Boot is a drop-in replacement baseplate with no tools required. You can swap it on and off your PMAG as needed, or run it permanently if you like the extra capacity and functionality.

How much extra capacity does each extension add?

Each Dos Boot adds 2 rounds per magazine. The three-pack gives you six additional rounds across your magazines when fully loaded.