$49 M3A1 Grease Gun Low-poly 3D model by luchadordev. Available on CGTrader with 15856 polys and 15480 vertices. Check it out on CGHub.
MAX (Autodesk 3ds Max, filesize: 104 MB), OBJ (OBJ, filesize: 209 MB), FBX (Autodesk FBX, filesize: 104 MB), TBSCENE (Marmoset Toolbag, filesize: 104 MB), TEXTURES (Textures, filesize: 196 MB), SPP (Substance Painter, filesize: 759 MB)