Check out muzzle brake mou station 3D model on CGTrader for $15. High-quality mesh by izydor-template.
STL (Stereolithography, filesize: 36.1 MB), OBJ (OBJ, filesize: 18 MB), 3DS (3D Studio, filesize: 36.1 MB), STP (STEP, filesize: 36.1 MB), FBX (Autodesk FBX, filesize: 36.1 MB), BLEND (Blender, filesize: 36.1 MB)