Check out ASHBURY ASW 338LM Sniper Rifle Low-poly 3D model on CGTrader for $65. High-quality mesh by businessajeg: 28000 polys, 28000 vertices. Rigged, PBR, Textured.
BLEND (Blender, filesize: 145 MB), OBJ (OBJ, filesize: 2.67 MB), FBX (Autodesk FBX, filesize: 110 MB), GLTF (glTF, filesize: 370 MB), DAE (Collada, filesize: 4.03 MB), FBM (fbm, filesize: 110 MB)