4-Round Magazine Extension for Glock 43


Government Export Restriction

This item may be regulated for export by the U.S. Departament of State or U.S. Departament of Commerce. Please see our Export Policy prior to placing your order.

The 42/43-10 is a magazine floor-plate replacement for the Glock 42/43 that adds 4 rounds for a total of 10 rounds 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.


  • + 4 rounds for a total of 10 rounds in the magazine! In 2021 Glock added an extra Coil to their magazines so you can only fit 3 extra rounds!!!
  • Enables a full grip on the handgun
  • Contoured finger indents for a firm grip during magazine manipulation
  • Innovative spring plate allows the use of the original magazine spring
  • Fiberglass reinforced polymer construction
  • Available in Matt Black with additional colours to follow


Glock 42 & 43 only!

SKU: fx-4310


1 out of 5 (based on 1 rating)
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Don't use for extra rounds

Nice grip extension but don't put the extra 4 rounds in. Springs will hang up and while that's fine to figure out on the range if you depend on your gun to fight with durring an emergency, don't use this as a mag extension. It could get you killed.
Posted by Randy Donahue, 06/17/22