The two Republican candidates for Alabama's Senate seat now each have gun rights groups in their corners.

Roy Moore received the backing Monday of the National Association for Gun Rights, the political action committee announced.

Rival Luther Strange boasts the endorsement of the National Rifle Association.

"Judge Roy Moore has proven to be a strict constitutionalist and has given good reason to believe he'll be a gun rights champion and vocal supporter of the Second Amendment in the U.S. Senate," Dudley Brown, Director of NAGR-PAC, said in the endorsement announcement.

The NAGR said Moore filled out his candidate survey 100 percent pro-gun and he "opposes expanded Brady Registration checks, calling them a national gun registration. He is also a steadfast opponent of high capacity gun magazine bans and bans on so-called 'assault weapons.'"

"Judge Moore has defended the Constitution as a judge, and is a great candidate to do the same as a Senator," Brown said. "In this new political landscape, Moore will defend against anti-gun legislation, but also go on the offensive and roll back unconstitutional gun control laws."

The NAGR said in the announcement that it has 4.5 million members and supporters nationwide.

Moore and Strange will be in the runoff Sept. 26 with the winner of the GOP nomination facing Democrat Doug Jones in the Dec. 12 general election.