Money and grassroots

For a quick comparison lets use IRS 990 tax exempt forms to compare grassroots support. All forms used were from 2009. http://www.charitynavigator.org/index.cfm?bay=content.view&cpid=847

Brady Center
Membership dues: 0
Contributions and grants: 2,708,597
Avg donation: $25
Rough estimate of number of donors: 2,708,597 / 25 = 108,344

Brady Campaign
Membership dues: 0
Contributions and grants: 3,374,387
Avg donation: $25
Rough estimate of number of donors: 3,374,387 / 25 = 134,975


Mayors Against Illegal Guns Action Fund
Membership dues: 0
Contributions and grants: 85,298
Avg donation: $25
Rough estimate of number of donors: 85,298 / 25 = 3,412


NRA
Membership dues: 113,969,660
Contributions and grants: 66,939,159
Avg donation: $25 (although $10 is their lowest, we'll use $25 for good comparison)
Average membership cost: $35, although it is often much lower, and doesn't count life members.
Rough estimate of number of donors: 66,939,159 / 25 = 2,677,566 (this number is most likely overlaps heavily with the membership number)
Rough estimate of number of members (35): 113,969,660 / 35 = 3,256,276 (which is low by 1,000,000)


Let the numbers speak for themselves.