+2 Magazine Capacity Aggressive tread for solid contact Convex shape for smooth prone adjustments Improved grip surface for confident handling Tool-less, drop-in replacement High-impact injection-molded nylon Made in the USA Introducing the Dos Boot by DFCO — an enhanced base plate upgrade for your Magpul PMAG GEN M3 AR15/M4 magazines. The Dos Boot adds +2 rounds of capacity, converts your PMAG into a convenient monopod, and improves grip for quicker, smoother reloads. It's the unintrusive and practical magazine upgrade you deserve. We designed the Dos Boot with 20-round mags in mind, aiming to get as low to the ground as possible without letting your rifle grip touch dirt. The result? A sleek extension that gives you a 10% capacity bump, better stability in prone, and easier mag handling thanks to its contoured shape and aggressive tread. Though originally designed for 20-rounders, the Dos Boot is right at home on 10, 30, and even 40-round magazines. It’s versatile, practical, and just the right amount of extra. Specifications Brand: Die Free Co Manufacturer part #: DOS-BOOT-BLK UPC: 860013578121 Category: Pouches › Magazine Shipping weight: 0.14 lb Country of origin: US Ships fast from GunCycle — free economy shipping on orders $99.99+.