A freelance hard-surface artist Binh Le has recently shared a weapon smart material pack he has created for his tutorial on creating Mini Uzi.
Here is a little preview if you’re interested in the tutorial:
You can either buy the pack for $4.99 or get it for free. In order to get the pack for free, you need to use the code “b3dweapon” on Gumroad. The set brings 7 nice-looking materials.
You can use it in your commercial and personal projects for free. Please note that you need Substance Painter 2018.2.1 or above to use the materials.