Check out Modular Assault rifle Colt standart M4A1 Low-poly 3D model on CGTrader for $35. High-quality mesh by PsyTi: 37846 polys, 18891 vertices. PBR, Textured, UV Mapped.
BLEND (Blender, filesize: 1.76 MB), OBJ (OBJ, filesize: 767 KB), FBX (Autodesk FBX, filesize: 6.24 MB), MAX (Autodesk 3ds Max, filesize: 1.23 MB), MA (Autodesk Maya, filesize: 3.04 MB), TEXTURES (Textures, filesize: 1.06 GB), PNG (PNG, filesize: 1.06 GB), OTHER (Other, filesize: 435 Bytes)