Colt M1911 Low-poly 3D model is available on CGTrader for $9. Original author: jacob1998. Specs: 4979 polys, 4991 verts.
OBJ (OBJ, filesize: 556 KB), 3DS (3D Studio, filesize: 408 KB), FBX (Autodesk FBX, filesize: 454 KB), MAX (Autodesk 3ds Max, filesize: 3.9 MB)