Faxon Modular Mag Extension for G19, Combo, Gray

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Choose Your Capacity. Customize Your G19 or Faxon FX-19. 

Choose between +5 and +3 setups. Mix & match colors. It’s up to you! 


Faxon Firearms Modular Magazine Extensions are rigorously tested with and engineered for the Glock® 19 handgun platform. Machined from 6061 T6 aluminum with a type 2 anodize finish, the unique modularity of these extensions allows users to choose from a number of setups and finishes for their Glock 19® pistol or Faxon FX-19 pistol.  

All Faxon Modular Magazine Extension Kits include assembly screws, while +5 and combo kits also include a +5 compatible spring+3 kits are OEM spring compatible. Assembly and disassembly is easy. With the modularity of Faxon’s design, proper disassembly will not require any destruction of the spring to remove the extension.  

When assembled, screws should be torqued to 12-15 in/lbs.  


*Faxon Firearms Modular Magazine Extensions are tested for compatibility only with Glock® 19 OEM/factory magazines. These extensions are not recommended for aftermarket magazines. Faxon recommends usof the inner base plate of the existing magazine when installing a Faxon Firearms Modular Magazine Extension 

3/32 Allen key is included* 

Faxon Firearms Magazine Extensions are backed by the Faxon Firearms Lifetime Guarantee. 


Tech Specs: 

  • Material: 6061 T6 Aluminum 

  • Finish: Type 2 Anodize 

  • Width: 1.2in 

  • Height: .84in (sleeve), 1.19in (+3), 1.52in (+5)

  • Length: 1.7in  

  • of +3 including mag: 5.06in 

  •  of +5 including mag: 5.35in  

  • Loaded +5, 115 Grain: .79 lbs 

  • Unloaded +5: .27 lbs 

  • Loaded +3115 Grain.71 lbs 

  • Unloaded +3: .24 lbs 

Product Type:
Modular Magazine Extension
6061 T6 Aluminum
Type 2 Anodize
Handgun Type:
Glock® G19
Combo (+3 and +5)