The NRA, with its 4 million members, historically waits until about a month before the November general election to make its endorsement, said the NRA's head lobbyist, Chris Cox.
"That being said, given the candidates and the process and the front-loading of the primaries, it is a possibility that we could get involved in one of these presidential primaries," Cox told the Times.
The NRA endorsed George Bush just a month before the general election in 2000 and 2004 and provided millions of dollars in advertisements, phone banks and other get-out-the-vote efforts, the Times said.
The NRA didn't endorse a Republican presidential candidate in 1992 or 1996 and the Republican candidate lost each race to Bill Clinton.
Moore to attend retreat in to avoid Kutcher's wedding
Easer Egg Roll brings thousands to White House