FAB Defense Magazine Extension +4 9mm Luger for Glock 42
Lowest Price
MSRP
$25.8
Savings
19% off
Verified In Stock at
10 Stores
Updated
Aug 26, 2026
Compare Deals from 15 Retailers
Verified availability, then price
Red Team Armory Best
● In Stock
Good 4 Guns
● In Stock
GrabAGun
● In Stock
$20.89
OpticsPlanet Coupon
Code ARMSAGORA — 7% Off Most Items
● In Stock
$23.99
$25.8
701
701 Arms
● In Stock
$25.8
E-Commerce Arms
● In Stock
$25.8
EK Tactical
● In Stock
$25.8
Pickett's Mill Armory
● In Stock
$25.8
Page 1 of 2
Specifications
Description
The FAB Defense Magazine Extension is a magazine floor-plate replacement that adds 4 rounds of capacity in a magazine. Special ergonomic design enables secure manipulation of the magazine and a full grip on the weapon when the magazine is in use. FeaturesEnables a full grip on the handgunContoured finger indents for a firm grip during magazine manipulationInnovative spring plate allows the use of the original magazine springFiberglass reinforced polymer construction Note: In 2021 Glock added an extra Coil to their magazines so you can only fit 3 extra rounds
