Pearce Grip Magazine Base Pad for Glock Gen 4 - Plus Two Capacity, 9mm & .40 S&W, Black Polymer

The Pearce Grip Magazine Base Pad for Glock Gen 4 is a straightforward way to squeeze extra rounds into your defensive or range magazines. This black polymer extension replaces your magazine's factory floor plate and internal locking plate, adding genuine capacity to high-capacity Glock magazines. If you run Gen 4 sub-compact, mid-size, or full-size Glocks in 9mm or .40 S&W, this base pad gives you two additional rounds per magazine — a small gain that adds up fast across a duty loadout or training session.

Pearce Grip engineered these pads from high-impact polymer built to handle real-world use. The material withstands temperature extremes from -20°F to 350°F and passes drop tests, so your magazines stay reliable whether you're working in a cold range in January or a hot car in summer. The replacement is straightforward: it's a direct swap for your original floor plate, no gunsmithing or modification to the magazine tube itself.

This pad is caliber-specific and fit-specific—it works only with Gen 4 high-capacity magazines in 9mm and .40 S&W. It won't fit 10mm or .45 ACP models, and it's not compatible with earlier Glock generations. If you have the right platform, this is a cheap, legal way to add capacity without buying new magazines.

Key Features

• Adds two rounds to 9mm and .40 S&W Gen 4 high-capacity magazines
• High-impact polymer construction rated for extreme temperatures (-20°F to 350°F)
• Drop-tested for durability in duty and range environments
• Direct replacement for factory floor and internal locking plates
• No permanent modification to magazines required

Specifications

Frequently Asked Questions

Will this base pad fit my Glock magazine?

This pad is designed for Glock Gen 4 high-capacity magazines in 9mm and .40 S&W only. It will not work with 10mm, .45 ACP, or earlier Glock generations. Confirm your magazine generation and caliber before ordering.

How many rounds does it add?

The Pearce Grip base pad adds two rounds to 9mm and .40 S&W Gen 4 magazines. For example, a standard 15-round 9mm magazine becomes 17 rounds.

Is installation permanent?

No. The base pad replaces the factory floor plate and internal locking plate and can be swapped back to original components if needed. There is no permanent modification to the magazine itself.

How durable is the polymer material?

Pearce Grip manufactures these pads from high-impact polymer tested to perform across extreme conditions, from -20°F to 350°F, and they pass drop tests to ensure reliable use in duty and training applications.