“Today the NRA receives millions of dollars from online sales of ammunition, high-capacity ammunition magazines, and other accessories through the Round-Up Program, created by top NRA benefactor Larry Potterfield. Potterfield is founder and head of MidwayUSA, which claims to stock “[j]ust about everything for shooting, reloading, gunsmithing and hunting,” including ammunition and high-capacity ammunition magazines. The Round-Up Program encourages buyers to “round-up” their purchase to the nearest dollar with the difference going to the NRA.”