FAB Defense FX4210B Mag Extension 380 ACP 4rd Compatible w/Glock 42 Black Polymer

Description

This is a FAB Defense 4-round .380 ACP magazine for the Mag Extension.

A magazine of this capacity is typical of compact and single-stack pistols, where a slimmer grip matters more than round count. Magazines are consumable: springs and followers wear before the body does, so buying spares and rotating them is cheaper than chasing feed problems later.

Several states and cities cap magazine capacity, and those limits change. Check your state and local rules before ordering – we ship to your address or your dealer, but we cannot ship a magazine somewhere it is not legal. Magazines ship directly to you with no FFL transfer.

The 42-10 is a magazine floor-plate replacement for the Glock 42 (.380 ACP) that adds 4 rounds for a total of 10 rounds in a magazine. The special ergonomic design enables secure manipulation of the magazine and a full grip on the weapon when the magazine is in use.