FAB Defense FX-4210B Glock 42 Magazine Extension
FAB Defense magazine floor-plate extension for Glock 42 (.380 ACP) adds 4 rounds for 10-round total capacity. Ergonomic polymer design ensures secure handling and full grip.
Fits: Glock 42
Enhanced Capacity for Your Glock 42
The FAB Defense FX-4210B is a magazine floor-plate replacement designed specifically for the Glock 42 chambered in .380 ACP. This simple yet effective accessory adds four additional rounds to your magazine, bringing total capacity from the standard six rounds to a practical ten rounds.
Design and Functionality
The extension features an ergonomic design that accomplishes two critical objectives:
- Secure Manipulation: The contoured floor plate allows confident magazine removal and insertion during shooting drills and tactical reloads
- Full Grip: When the extended magazine is seated, your hand achieves a complete grip on the pistol, eliminating the "pinky in the air" problem common with compact pistols
Practical Advantages
For a defensive .380 ACP platform, the additional four rounds represent a meaningful increase in on-board ammunition. The black polymer construction is durable and lightweight, adding negligible weight to your carry setup. Installation is straightforward—simply replace your existing magazine floor plate with the extension.
Whether you're training at the range or carrying for personal defense, the FAB Defense extension transforms your Glock 42 into a more capable platform without sacrificing the pistol's compact, concealable profile.
