Warne builds this +2 magazine extension (part no. 3131) for the Glock 42, a subcompact .380 ACP pistol, adding 2 rounds of additional capacity to the factory magazine without switching to a bulkier aftermarket mag. Finished in black, the extension replaces the factory base plate and adds only a small amount of overall length, keeping the pistol’s compact carry profile largely intact while boosting round count. For Warne owners of a Glock 42, this magazine accessory is a simple capacity upgrade.

Key Specifications

• Adds 2 rounds of extra .380 ACP capacity to the factory magazine.
• Built specifically for the Glock 42.
• Finished in black.
• Replaces the factory base plate with minimal added length.
• Weighs approximately 0.06 pounds, negligible added bulk.
• Measures 1.5 inches in length.
• Built specifically for .380 ACP Glock 42 magazines.
• Categorized by the manufacturer as a magazine accessory.
• Manufactured by Warne.

Frequently Asked Questions

What pistol does this extension fit? The Glock 42.

How much capacity does it add? 2 additional rounds over the factory magazine.

Buy the Warne Glock 42 Magazine Extension

A simple way to add 2 rounds of capacity without bulking up the Glock 42’s carry profile, this Warne extension is an easy upgrade for any G42 magazine. Order it from our Lubbock, Texas gun shop for fast, insured shipping.