Archives included: Blender file, FBX, OBJ, textures (Diffuse, Metallness (for some details, for other used solid white or black color in Principled PBR shader), Roughness, Bump (for some details)). Blender - modeling. Substance painter - texturing. Cycles - render. All names of materials, objects, textures - English, mesh without N-gons. All parts unwraped.
N.B. In export files (OBJ, FBX) bullet is in the top barrel.