M16-A2 rifle Low-poly 3D model is available on CGTrader for $12. Original author: Antwo3d. Specs: 9014 polys, 9701 verts.
MA (Autodesk Maya, filesize: 5 MB), BLEND (Blender, filesize: 3.96 MB), OBJ (OBJ, filesize: 3.18 MB), FBX (Autodesk FBX, filesize: 3.62 MB), MAX (Autodesk 3ds Max, filesize: 5.91 MB), GLTF (glTF, filesize: 56.5 MB), TEXTURES (Textures, filesize: 221 MB), UNITYPACKAGE (Unity 3D, filesize: 69.9 MB)