The NRA is not quite the same as the NRA-ILA which is the political wing of the organization.
At this link is a list of NRA programs. Notice there is nothing about politics on the page
http://www.nra.org/programs.aspxThis link shows the NRA-ILA page. Notice that there is nothing about shooting classes or other services that were listed on the NRA page.
http://www.nraila.org/If you are an NRA member, only a small portion of your dues goes to the NRA-ILA.
NRA, ILA And The NRA Political Victory Fund
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The Institute receives some funding from NRA member dues, but its main source of revenue is derived from member contributions designated for legislative activity. ILA is not associated with any firearms or ammunition manufacturers. emphasis added All NRA members know the benefits they receive from being part of the pre-eminent grassroots lobbying organization in America. At the same time, many are unaware of some of the important regulations and restrictions that govern NRA’s legislative and political activities, particularly those relating to the segregated nature of fund-raising activities.
The fund-raising that sustains NRA’s legislative activities is conducted by ILA. Federal and many state election laws dictate that funds used to assist candidates for office must be raised separately, and that is the task of NRA’s political action committee—the NRA Political Victory Fund (NRA-PVF).
Neither NRA member dues nor contributions to ILA can be used directly for the election or defeat of candidates.emphasis addedBecause of these clearly defined parameters, and because only a small fraction of ILA’s operating budget comes from regular NRA membership dues, both ILA and NRA-PVF must continuously raise the funds needed to sustain NRA’s legislative and political activities. The resources expended in these arenas come from the generous contributions of NRA members—above and beyond their regular dues.
http://www.nraila.org/About/PoliticalVictoryFund/