Palmetto State Armory© Palmetto State Armory
14Deal ScoreIn Stock

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

$20.19
Brand
FAB Defense
Color
Black
Capacity
4
Category
Gun Parts
Gun Part Type
Magazine
UPC
7290111585005
MPN
FX4210B

Overview

The FAB Defense magazine extension for the Glock 42 is a floor-plate replacement engineered to increase magazine capacity by 4 rounds. The extension is constructed from fiberglass-reinforced polymer and includes a specialized spring plate that allows for the use of the original factory magazine spring. Note that due to changes in Glock magazine spring design, some models may only accommodate an increase of 3 rounds. The extension features contoured finger indents to provide a secure grip and assist with magazine manipulation. Its design allows for a full firing grip on the handgun and maintains reliable feeding. The unit has a black finish and is designed to integrate seamlessly with the factory Glock 42 magazine.

Price & Stock History

Price — 90d
Listings In Stock — 30d

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