Pearce Grip PGG42733 Magazine Extension - Polymer, Black Finish, 5/8" Grip for Glock 26/27/33 Gen4-5 (Adds 2rds/1rd)

The Pearce Grip PGG42733 magazine extension is a polymer base pad upgrade for Glock 26, 27, and 33 compact pistols running Gen 4 or Gen 5 frames. If you carry a single-stack subcompact and feel cramped on the grip, this straightforward mod adds real control without bulk: 5/8 of an inch of extra length to anchor your pinky finger properly, plus capacity you'll actually use—two extra rounds for the .380 ACP 26, and one each for the .40 S&W 27 and .357 SIG 33.

Built from high-impact polymer in matte black, the extension replaces your magazine's stock base plate and floor plate. It's engineered to match Glock's factory texture and profile, so it looks purposeful rather than jury-rigged. The material holds up across a wide temperature swing—from winter cold to summer heat—and passes drop testing. Because it uses the magazine's existing notches for ambi magazine release, it fits Gen 4 and Gen 5 tube designs directly; early Gen 4 Glock 33 mags may need minor fitting. New magazine springs benefit from a 250-round break-in period before the final round loads smoothly.

This is the kind of tweak that works best on guns you actually shoot: a small, durable comfort gain that keeps a carry pistol fast and pointable without sacrificing concealability. Install it, run it, and get used to a grip that works for your hand size.

Key Features

• Adds 2 rounds to Glock 26 (.380 ACP), 1 round to Glock 27 (.40 S&W) and 33 (.357 SIG)
• Extends grip 5/8 inch for better finger purchase and control
• High-impact polymer construction withstands -20°F to 250°F temperatures
• Passes drop-test durability standards
• Factory-matched black finish and texture—blends with Gen 4/5 Glock pistols
• Designed for Gen 4 and Gen 5 frames with ambi magazine release notches

Specifications

Frequently Asked Questions

Will this extension fit my Glock 26/27/33 magazines?

The PGG42733 is designed for Gen 4 and Gen 5 Glock magazines equipped with ambi magazine release notches. Early-generation Gen 4 Glock 33 magazines may require minor modification. Check that your magazine has the notched design before purchase.

How many extra rounds does it add?

The extension adds 2 rounds to the Glock 26 and 1 round to both the Glock 27 and Glock 33.

Will the extension hide under my concealment holster?

The 5/8-inch extension provides meaningful grip real estate while maintaining a profile close to factory dimensions. Concealment depends on your holster and carry method—test with your specific setup to confirm.

Do I need to break in the magazine springs?

New magazine springs benefit from a 250-round break-in period before the final extra round loads smoothly. Plan on shooting through that cycle to condition the spring fully.