1720 Flintlock Long Rifle Low-poly 3D model is available on CGTrader for $15. Original author: ferzgl. Specs: 4367 polys, 4590 verts.
BLEND (Blender, filesize: 2.97 MB), BLEND (Blender, filesize: 2.97 MB), OBJ (OBJ, filesize: 597 KB), FBX (Autodesk FBX, filesize: 612 KB), GLTF (glTF, filesize: 25.8 MB), TEXTURES (Textures, filesize: 22.1 MB)