The cheapest option is pla as it is safe and easy to print. This article will explore some of the top filament for 3d printing guns out there. Best 3d printing material/filament for gears.
The Top 13 3D Printed Nerf Guns, Attachments & Mods 2021 3DSourced
The strongest 3d printer filament you can buy is polycarbonate filament. Mika3d 1.75mm 3 in 1 metallic shiny silk bronze gun silver grey white pla 3d printer filament. Popular shiny color in pla 3d filament: The best filament type for most people and projects, pla (polyactic acid) is usually inexpensive and easy to print, which is why it’s also the most popular material.