Animated FPS Weapons Pack (Part 1)
https://assetstore.unity.com/packages/3d/props/weapons/animated-fps-weapons-pack-part-1-92280

92 high quality models and textures of old buildings, ruined towers, cliffs, foliage, vines and wooden planks.
Materials can be quickly adjusted to fit your needs. All you need to bring your environments to life. Modular assets allow you to create unlimited number of structures.