In StockSave 41%
FAB Defense FX-4210B Glock 42 Compatible 380 ACP Black Polymer 4rd
Sold byBattleHawk Armory•Posted Apr 27, 2026
Compare prices for FAB Defense Magazine Extension +4 9mm Luger for Glock 42$17.14
$28.99
You save $11.85 (41% off)
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Deal Summary
- Currently in stock.
- Caliber: 380acp
- Category: accessory
Price History
Deal Details
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.
UPC Price Comparison
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