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: Black
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 - Building a Strong Basepad
Take a look at the super-strong Goliath +20 basepad for the Gl...
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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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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...
Custom Field
Product Reviews
21 Reviews Hide Reviews Show Reviews
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Goliath
Works good in my Ruger pcc
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Goliath base plate
Build quality is amazing, loved everything about it except that it didn't work on ets group magazines.
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Goliatn Glock Plus 20 Basepad, Black
This is in all honesty the best basepad design I have ever seen. Easy install, easy bottom plate removal for cleaning, feeds flawlessly, and strong as an ox! Great quality, reminds me of jewelry. Talk about bang for your buck! This is it!!!