Whats the differences between these two optics? Is it just the Army's designation for the same optic?
http://www.opticsplanet.com/leupold-mark-4-12-40x60mm-tactical-spotting-scope-60040.html
http://www.opticsplanet.com/leupold-mark-4-12-40x60mm-tactical-spotting-scope-60040.html