The Ed Brown extended mag base pads allows for 2 extra rounds to be loaded into your M&P magazine, without any other changes. Works great in combination with the Ed Brown Magwell for M&P, but can also work alone. Ed Brown base pads add a level of protection to your M&P magazine, while giving you a better gripping surface for easier manipulations under the stress of competition or self-defense. The profile is just aggressive enough to ease handling, without making it uncomfortable to control. Fully machined from aluminum and anodized for a lifetime of service.