It is likely that not many of you use the 4473 LV (Low Volume) form. Frankly, not many other folks do, either. After years of public hand wringing, ATF has finally decided to eliminate it's use outright, effective October 3, 2014. One 4473 for pretty much everything. The link to the Federal Register notice is provided.

http://www.gpo.gov/fdsys/pkg/FR-2014...2014-18392.pdf