Yes. Had my straight 6x switched from heavy duplex to standard. For what it's worth, after using for a few years - did not like the heavy at all. Swift service from Leupold, although it was probably ten years ago.
Decided to keep my scope the way it is and went out and bought a new VX2 3-9x50 with the heavy duplex.If I decide I don't like it after awhile,I can always sell it. Leupold scopes hold good resale value.