80 Percent Builder is your go-to resource for high quality aftermarket barrels for those looking for a custom firearm build. We offer a variety of finishes that fit a G17, G19, G20, G21, G22, G23, G26, G34, and G35. Our barrels are made from the high quality materials which makes for highly accurate builds. These barrels are ready-to-use and are a perfect replacement for your existing Glock barrel.