Check out Submachine Gun M24 R Retexurted Low-poly 3D model on CGTrader for $31.51. High-quality mesh by 3DHaupt: 12497 polys, 6385 vertices. PBR, Textured, UV Mapped.
STL (Stereolithography, filesize: 610 KB), OBJ (OBJ, filesize: 1.05 MB), BLEND (Blender, filesize: 94.8 MB), OTHER (Other, filesize: 6.39 MB), 3DS (3D Studio, filesize: 288 KB), FBX (Autodesk FBX, filesize: 1.14 MB), UNITYPACKAGE (Unity 3D, filesize: 88.7 MB), UASSET (UnrealEngine, filesize: 197 MB)