Fits Glock 42

Glock 42 Extended Mag: OEM and Aftermarket .380 ACP Magazine Extensions

A Glock 42 extended mag is an OEM or aftermarket magazine with a base pad extension that increases capacity beyond the standard 6 rounds of .380 ACP. The Glock 42 is the smallest Glock pistol with a 3.25-inch (83 mm) barrel, a 0.94-inch (24 mm) frame width, and a weight of 13.76 oz (390 g) unloaded. The OEM Glock 42 factory magazine with extension (SKU: MF08833) holds 6 rounds of .380 ACP and includes a grip extension floor plate that provides additional pinky support. TactaBlue stocks Glock 42 extended mags from Glock OEM, Vickers Tactical, Taran Tactical Innovations (TTI), Strike Industries (SI), Ghost Inc., and Pearce Grip.

Glock 42 OEM Factory Magazine with Extension

The Glock 42 OEM factory magazine with extension (MPN: MF08833) is a 6-round .380 ACP magazine with an extended polymer base plate that adds 0.5 inches (13 mm) of grip length below the standard floor plate. The extension does not increase capacity - the extension provides a pinky rest for improved grip control on the subcompact G42 frame. The OEM extended magazine retails at $23.10.

Glock 42 Magazine Extension Options

Vickers Tactical +2 Magazine Extension for Glock 42

The Vickers Tactical +2 magazine extension for the Glock 42 increases capacity from 6 to 8 rounds of .380 ACP. The Vickers extension is designed by Larry Vickers with a textured grip surface and a snag-free profile for concealed carry. The +2 extension replaces the factory floor plate and includes a longer spring.

Taran Tactical Base Pads for Glock 42

TTI manufactures Glock 42 base pads in 3 capacity configurations: +1 (7 rounds), +2 (8 rounds), and +3 (9 rounds). TTI base pads are machined from aluminum with anodized finishes in 10+ colors. The +1 base pad provides minimal grip extension. The +3 base pad extends approximately 0.75 inches (19 mm) below the standard floor plate.

Strike Industries Enhanced Magazine Plate for Glock 42 +2

The Strike Industries (SI) Enhanced Magazine Plate for the Glock 42 adds +2 rounds for a total capacity of 8 rounds of .380 ACP. The SI plate is available in black polymer with a textured grip surface.

Ghost +2 Magazine Extension for Glock 42

The Ghost Inc. +2 magazine extension for the Glock 42 adds 2 rounds in a polymer body that matches the factory magazine profile.

Pearce Grip +1 Extension for Glock 42

The Pearce Grip (PG) +1 grip extension for the Glock 42 adds 1 round and extends the grip for full pinky engagement. The Pearce Grip extension is the most compact capacity increase available for the G42.

Glock 42 Specifications

The Glock 42 specifications are:

• Caliber: .380 ACP (9x17mm)
• Barrel length: 3.25 inches (83 mm)
• Overall length: 5.94 inches (151 mm)
• Width: 0.94 inches (24 mm)
• Height with standard magazine: 4.13 inches (105 mm)
• Weight unloaded: 13.76 oz (390 g)
• Standard magazine capacity: 6 rounds
• Magazine type: Single-stack

Glock 42 vs. Glock 43 Magazine Extensions

The Glock 42 (.380 ACP) and Glock 43 (9x19mm) use different magazines that are not interchangeable. The G42 magazine body is slightly narrower than the G43 magazine to accommodate the smaller .380 ACP cartridge. Some aftermarket extension manufacturers (TTI, Vickers Tactical, Pearce Grip) produce separate extensions for the G42 and G43 - verify model compatibility before purchasing. The G42 fires .380 ACP at lower chamber pressure (21,500 psi) than the G43 9mm (35,000 psi), which means G42 magazine springs experience less cycling stress.

Glock 42 Extended Mag Installation

To install a Glock 42 magazine extension, remove the magazine from the pistol, press the floor plate retention tab with a punch tool, slide the floor plate off, remove the spring and follower, replace the spring with the extension's longer spring, insert the follower, and slide the new base pad into place. Installation takes 2 to 5 minutes per magazine. No permanent modification is required. Browse Glock 43 magazines, Glock 43X magazines, and the complete selection of Glock accessories and upgrades at TactaBlue.