Most double guns above the basic field grades were available with stock dimentions to order. My 1905 Philadelphia Arms Co. Pigeon Gun has a 14 7/16 inch length-of-pull and 2 3/8 inch drop at heel. I have five Fox doubles that left the factory with less then 2 3/8 inch drop-at-heel. Remington even offered a choice of dimentions on their lowest K-Grade hammerless double -- 14, 14 1/4 or 14 1/2 inch LoP and drops from 2 to 3 1/2 in 1/8 inch incremnents. So, people could get what they wanted and obviously many wanted that much drop. I have a photo copy of an early article by Cedric Fox extolling the virtues of a 4 1/2 inch drop at heel!!! A friend has an A.H. Fox 20-gauge so stocked!! Go figure!!