Very old school, the mount makes the adjustments instead of the scope. Also included a Picatinny/20mm mount so it can be used on modern weapons for your game. Other formats are available.
SKP (Sketchup, filesize: 5.35 MB), OBJ (OBJ, filesize: 4.14 MB), DWG (AutoCAD, filesize: 18.6 MB), DAE (Collada, filesize: 4.81 MB)