FR-1 Viper Build Guide | Nerf Blasters

Step-by-Step guide to building your own Nerf Viper revolver, designed by Freedom Blasters. You can get your own Viper kit here: https://frontlinefoam.com/product/vip... Viper Printed Parts Kit: https://frontlinefoam.com/product/fr-... Viper Hardware Kit: https://frontlinefoam.com/product/fr-... Print your own (Free STL files): https://frontlinefoam.com/free-stl-fi...