Check out SciFi-Smg gun Low-poly 3D model on CGTrader for $35. High-quality Polygon mesh mesh by samadelphi2020: 19579 polys, 17582 vertices. PBR, Textured, UV Mapped.
BLEND (Blender, filesize: 994 KB), OBJ (OBJ, filesize: 668 KB), FBX (Autodesk FBX, filesize: 903 KB), TEXTURES (Textures, filesize: 314 MB)