Level up your black PMAGs with the Dos Boot by DFCO a sleek no-tools-needed upgrade that adds +2 rounds improves grip and turns your mag into a stable shooting platform. Designed for 20-round mags but compatible with 10 30 and 40-rounders it keeps your rifle low and clean in prone. The aggressive tread and contoured shape deliver faster reloads and better control. Rugged reliable and made to blend seamlessly with your all-black loadout.