Double Barrel Shotgun 2 Low-poly 3D model is available on CGTrader for $55. Original author: OlegShuldiakov. Specs: 763 polys, 1200 verts.
OBJ (OBJ, filesize: 3.2 MB), FBX (Autodesk FBX, filesize: 3.2 MB), MAX (Autodesk 3ds Max, filesize: 3.2 MB), MA (Autodesk Maya, filesize: 3.2 MB)