Hello, I’ve completed a personal project of the HK MP7 and some attachments for it . The textures were created using the metalic roughness workflow. In texture folder you can find .spp file and do whatever you want
OBJ (OBJ, filesize: 1.11 MB), FBX (Autodesk FBX, filesize: 1.57 MB), SPP (Substance Painter, filesize: 2.54 GB), PNG (PNG, filesize: 2.54 GB)