Product Description
Wield 51+1 rounds from your Glock pistol-caliber carbine! Unprecedented strength: rigid design absorbs abuse and hard knocks. We can STAND ON IT! (See video.) Quick-release base allows for easy cleaning (without taking the mag apart) "Sword-like" grip provides positive control when inserting -- you won't slip in a critical moment! Includes custom super-length spring. Due to state department restrictions we cannot ship this part internationally. California customers with LE or Hi-Cap credentials, call us directly to order.
Weight: 5.7 ounces
Material: Aluminum
Color: Red
NOTE: Because of a combination of factors, we build our basepads slightly "short" for best reliability. As a result, they will run properly with ammunition loaded to 1.125" overall or less. That's a typical length for 115- and 124-grain loads, but some (notably, Winchester 115 RN) will go out all the way to 1.160".
HINT: If your extension will take 35 rounds and then becomes unreliable (or sticks), check the length of your ammunition! Question? Give us a call and we can explain.
NOTE: Our friend Josh Froelich has posted a great video showing how to "tune" your Glock mags along with our Goliath magazine extensions for flawless operation. Thanks Josh! https://youtu.be/WjCiFXlnnyE
Product Videos
Videos Hide Videos Show Videos
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Goliath - How We Build a Stronger Basepad
Take a look at how we fixed the strength problem in magazine e...
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Goliath - Building a Strong Basepad
Take a look at the super-strong Goliath +20 basepad for the Gl...
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New! Goliath Glock +20 Basepad Extension!
Check out our newest basepad! The Goliath ads +20 rounds to y...
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Installing the Goliath Basepad
Watch how easy it is to install our Massive +20 Goliath Basepa...
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Goliath Glock +20 Extension - Color Rotation
New video of our +20 extension showing our new color scheme. ...
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Goliath Mag. Extensions - New Product Showcase - MAY 2019
With all the high round count stages in PCC matches, reliable ...
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Taylor Freelance Goliath AR9 Mag Build
Glock mags were not designed for big extensions, but with a bi...