I modeled an AR 15 rifle with some interesting wooden components. I hope you enjoy it.
In the rar file there is blender, fbx, texture files and substance painter files.
You can open blender file with 4.5 version
In the texture files there is 11 set textures with uvw mapped. (non overlapping)
And also fbx format supported.
BLEND (Blender, filesize: 381 MB), FBX (Autodesk FBX, filesize: 381 MB), JPG (JPG, filesize: 381 MB), PNG (PNG, filesize: 381 MB), SPP (Substance Painter, filesize: 3.2 GB)