Adolphus Busch IV, an heir in the Anheuser-Busch beer-making family, has reportedly resigned from the National Rifle Association over the NRA's "distorted values" in the recently concluded gun control debate.

"The NRA I see today has undermined the values upon which it was established," Busch wrote in a letter obtained by KSDK-TV in St. Louis. "Your current strategic focus places a priority on the needs of gun and ammunition manufacturers while disregarding the opinions of your 4 million individual members.”

Busch added that the NRA's board of directors is dominated by manufacturing interests and says it represents their interests rather than those of gun owners.

"I am simply unable to comprehend how assault weapons and large capacity magazines have a role in your vision," Busch wrote.

Sen. Joe Manchin (D-W.Va.), an NRA ally who led the failed gun background check compromise in the Senate, also had harsh words for the NRA on Thursday.