Die Free Co Llc DOSBOOTBLK Dos Boot Black

The Die Free Co Dos Boot is a magazine base plate extension designed to upgrade your Magpul PMAG GEN M3 AR-15 magazines with added capacity, improved handling, and practical field utility. If you're running AR-15s for hunting, competition, or tactical training and want to squeeze more rounds into a magazine without swapping to a larger platform, this tool-less upgrade transforms your existing PMAGs into more capable platforms.

The Dos Boot adds two rounds of capacity to your magazine while serving double duty as a monopod rest—a feature that originated from Die Free Co's goal of keeping rifles stable and out of the dirt during prone shooting. The contoured design and aggressive tread pattern give you better grip during magazine changes and more confident handling under pressure. Whether you're working a line at the range or in the field, smoother reloads matter when seconds count.

Installation is straightforward: the Dos Boot is a drop-in replacement base plate that requires no tools. The impact-resistant injection-molded polymer construction handles hard use, and the design works across Magpul's full PMAG GEN M3 lineup—10, 20, 30, and 40-round capacities. Made in the USA and available in black, this is the kind of practical upgrade that doesn't overcomplicate your setup but delivers real utility in the field.

Key Features

• Adds +2 rounds of capacity to compatible PMAG GEN M3 magazines
• Functions as a monopod for prone shooting stability
• Tool-less, drop-in replacement design
• Impact-resistant injection-molded polymer construction
• Aggressive tread pattern for reliable grip and contact
• Contoured shape enables smooth positional adjustments
• Compatible with PMAG GEN M3 in 10, 20, 30, and 40-round sizes
• Made in the USA

Specifications

Frequently Asked Questions

Will the Dos Boot work on my Magpul PMAG magazines?

The Dos Boot is specifically designed for Magpul PMAG GEN M3 magazines in 10, 20, 30, and 40-round capacities. It will not fit other magazine brands or older PMAG generations.

Do I need tools to install this base plate extension?

No. The Dos Boot is a tool-less, drop-in replacement. Simply remove your existing base plate and install the Dos Boot in its place.

What's the monopod feature and how does it help in the field?

The contoured, convex shape of the Dos Boot allows your magazine to function as a monopod rest when shooting prone. This was a key design goal to keep your rifle stable and off the ground without adding bulk or complexity.

How much capacity does this add to my magazine?

The Dos Boot adds two rounds to your magazine, giving you a 10% capacity increase on a 20-round PMAG and proportional increases on other sizes.