Donald Trump has said that if everyone in the Pulse nightclub had had a gun, it would have been a different result.

Speaking in Atlanta on Wednesday, the Republican presidential nominee reiterated his pro-gun ideals, saying if everyone in the Pulse nightclub had had a gun, there would have been a different result.

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He said the same thing after the Paris attacks.

“If some of those great people that were in that club that night had guns strapped to their waist or strapped to their ankle,” Mr Trump said.

“And if the bullets were going in the other direction, aimed at this guy, who was just open target practice, you would have had a situation folks, which would have been always horrible, but nothing like the carnage that we all as a people suffered this weekend.

“By the way, I’m going to save your Second Amendment.”

Mr Trump says he will meet with the leading US gun rights group about preventing people on a government terrorism “watch list” from buying guns, as some fellow Republicans considered new gun restrictions following the Orlando massacre.

Donald Trump is about to meet with the National Rifle Association. Photo: Getty.

The long-simmering issue of gun control gained new urgency after a man who had been on one of the terrorism watch lists killed 49 people at an Orlando gay nightclub early on Sunday.

The National Rifle Association, a politically influential lobbying group that claims more than 4 million members and has worked with congressional Republicans in thwarting gun control legislation, said in a statement on Wednesday it was “happy to meet” with Trump, who it endorsed for president on May 20.

But Chris Cox, executive director of the NRA’s Institute for Legislative Action, said the group’s position on the issue of barring people on the watch lists from buying guns “has not changed.”

On Tuesday, the NRA said on Twitter that barring people on watch lists from buying guns is “ineffective, unconstitutional, or both.”

Senator John Cornyn, the No. 2 Senate Republican, and Democratic Senator Dianne Feinstein were holding private talks on a possible compromise bill on stopping weapons sales to those on watch lists, according to a Cornyn aide.

Another Republican, US Senator Pat Toomey of Pennsylvania, also is working on a bill that would keep guns from people on watch lists, a gun control group said.

Republicans have staunchly defended gun rights and fought off attempts during Democrat Barack Obama’s presidency to implement new restrictions.

But Republican opponents of gun control measures are again under pressure after the Orlando killings.

“I will be meeting with the NRA, who has endorsed me, about not allowing people on the terrorist watch list, or the no fly list, to buy guns,” Trump wrote on Twitter.

The FBI maintains two terrorism “watch lists,” a smaller “no fly” list barring people from flying to and from the United States and a larger one that subjects travellers to greater scrutiny at airports and border crossings.

The Orlando gunman, Omar Mateen, the US-born son of Afghan immigrants, was on the broader list at one time.

The NRA’s Cox said in a statement that “anyone on a terror watchlist who tries to buy a gun should be thoroughly investigated by the FBI and the sale delayed while the investigation is ongoing.” Cox added that “the NRA believes that terrorists should not be allowed to purchase or possess firearms,” but his statement did not define who he considered to be terrorists or specify whether that included those on the watch lists.

Cox separately appears on the NRA’s website saying, “Gun laws don’t deter terrorists.”

Cox also voiced backing for legislation offered in December by Cornyn, who proposed to put gun sales on hold for 72 hours for people on watch lists.

Critics have said such background checks could take longer to complete.

Cornyn’s proposal was in response to Democratic legislation to ban the sale of weapons and explosives to people on the watch lists.

Republicans blocked that legislation, arguing that innocent people are often placed on watch lists and the bill would deny them their constitutional rights to buy guns.

– with AAP.