Reagan was a member of the NRA when he signed the legislation but that doesn't mean the NRA endorsed it.
In fact, even The Washington Post admitted it was the NRA's refusal to condemn this and other similar legislation which lead to NRA members taking over the leadership and radically transforming a group primarily focused on hunting, conservation, gun safety and marksmanship into the civil rights lobby juggernaut it is today.
How NRA’s true believers converted a marksmanship group into a mighty gun lobby
Is that after "mUh PaRtY sWiTcH" happened?
Reagan was a member of the NRA when he signed the legislation but that doesn't mean the NRA endorsed it.
In fact, even The Washington Post admitted it was the NRA's refusal to condemn this and other similar legislation which lead to NRA members taking over the leadership and radically transforming a group primarily focused on hunting, conservation, gun safety and marksmanship into the civil rights lobby juggernaut it is today.
How NRA’s true believers converted a marksmanship group into a mighty gun lobby
https://www.washingtonpost.com/politics/how-nras-true-believers-converted-a-marksmanship-group-into-a-mighty-gun-lobby/2013/01/12/51c62288-59b9-11e2-88d0-c4cf65c3ad15_story.html
Archived link - https://archive.ph/Tc5Hx