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Guncrafter Industries .50GI Drop-In Conversion for Glock Pistols

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Cerakote Timeline:
2 Weeks
Guncrafter Industries .50GI Drop-In Conversion for Glock Pistols

The .50 GI™ Glock Conversion Unit will fit any Generation 1-4 Glock 20/21/40/41 frame. This unit comes ready to install with no fitting required.

These conversions are hand-fitted right here at Guncrafter Industries, and come with the same great warranty and support that all of our 1911's come with. The 50 GI™ conversion has been designed around the caliber. These aren't modified parts, they are hand-built from the ground up with the intention of giving the end user the ability to have 9+1 of .50 caliber rounds in your large frame Glock pistol. This makes a great CCW pistol, a hunting pistol, or just a range toy to impress your friends. 

Don't be intimidated at the thought of 50 caliber recoil out of a polymer frame pistol! Because the 50 GI™ is not in the magnum family, and because the round operations with such low pressure, you will be pleasantly surprised at how controllable a pistol platform firing 50 caliber rounds can be. 

Simply field strip your pistol, replace the upper end with your .50 GI Glock Conversion Unit, load your supplied 9 round magazine, and you are ready to take advantage of the most controllable 50 caliber round available. These barrels do NOT have polygonal rifling, nor are they affected by firing lead projectiles. 

Will fit standard holsters for your Glock model.

Extra magazines available in our store.

The conversion for Glock pistols does not need to be shipped to an FFL. 


Make sure to select your finish options, and what generation you need. Please call for custom options. 

*adding Cerakote will create a 2 week lead time. 

 *Frame not included.

 “GLOCK” is a federally registered trademark of Glock, Inc. and is one of many trademarks owned by Glock, Inc. or Glock Ges.m.b.H.Inc. Neither Guncrafter Industries, nor this site is affiliated in any manner with, or otherwise endorsed by, Glock, Inc. or Glock Ges.m.b.H. The use of “Glock” on this page is merely to advertise the sale of Glock pistols, parts, or components. For genuine Glock, Inc. and Glock Ges.m.b.H. products visit

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  • 5
    Great quality

    Posted by Jason Holloman on Sep 19th 2018

    The conversion kit is well made and I am impressed and satisfied with the craftsmanship. I installed a ".50" back plate on the slide and will add TFO sights to make it even better. Thanks.

  • 5
    Awesome conversion!

    Posted by Christos Kelesides on Jun 16th 2018

    Excellent engineering and craftmanship offers a practical upgrade for my Glock 21sf. I'm completely satisfied!

  • 5
    G21 gen3

    Posted by Jorge on Jan 7th 2018

    Awesome gun. Always accurate buying another