A little pack I made that contains:
• Black Glock 34
• Black Glock 34 with RDS
• Tan Glock 34
• Tan Glock 34 with RDS
Choose one of four versions of the Glock you want to use in-game. Rename it to gun, now you should have a gun.vox file. Pick this file and drop it at steamapps\common\Teardown\data\vox\tool and replace it with the original file.
Always make a backup of original files!