That tells me that between 4000 and 6000 have been sold, unless it was old "New Old stock".
I know of folks that have had theirs stamped "C", "E" and "F" company but not I or L yet.

Stamped into the butt of the backstrap is the company and 7th Cavalry markings. Production of this model is limited to 2000 units each of the 5 companies (C,E,F,I,L) that will perish under Custer’s command at Little Big Horn.