This is a paid asset, but now you can download Modular Sci-Fi Weapons for FREE, but please remember this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Detail this asset from Unity Store: Original Link
Modular Sci-Fi Weapons v2.1
Massive collection of modular Sc-Fi weapon parts and combinations examples!
Turrets, spaceship weapons, missiles, mines and bombs!
These are also compatible with our spaceships & space stations and can make a great addition to them.
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-URP Compatible
-HDRP Compatible
-40 Modules
-30 Turret examples (Can be easily animated)
-25 Spaceship weapons examples
-15 Mines and bombs
-17 Missiles
-13 color variations for the modular parts
-3 color variations for each missile or mine
-4K Albedo, Metallic/Smoothness, Normal and Emission maps for the modular parts and 512×512 for the mines and missiles
-Substance Painter file included for all the modular parts
-Texture colors masks included so you can easily change color in Photoshop or script
-Triangle count per turret example is between 300-3000 tri