Faxon Modular Glock Mag Extension, +5, Black

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Choose Your Capacity. Customize Your G19. 

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® G19 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.  

All Faxon Modular Magazine Extension Kits include assembly screws, while +5 and combo kits also include a +5 compatible spring+2/3 kits are OEM spring compatible.  

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

*Faxon Firearms Modular Magazine Extensions are tested for compatibility only with Glock® G19 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


  • 5
    +5 mag extension in bkack

    Posted by Christa Jackson on Aug 11th 2021

    The unit looks amazing straight out of the box and the fit and finish are spot on in all aspects and dimensions. Even the box is nice. I will be purchasing again from them and recommending them to others. Thanks for a great fitting great looking, very functional product!