Jeb Bush wouldn't commit to scrapping the Obama administration's nuclear deal on his first day as president, he said Friday.

"At 12:01 on January, whatever it is, 19, [2017], I will probably not have a confirmed secretary of state; I will not have a confirmed national security team in place; I will not have consulted with our allies. I will not have had the intelligence briefings to have made a decision," Bush said, according to Politico.

The former Florida governor traveled to Carson City, Nev., on Friday where he spoke to voters about firearm restrictions on military bases in the wake of yesterday's killing of four Marines in Chattanooga, Tenn. During the town hall event, Bush also took a jab at some of his GOP rivals who've promised to repeal the agreement with Iran on their first day in office.

"If you're running for president, I think it's important to be mature and thoughtful about this," said Bush, according to Politico. Wisconsin Gov. Scott Walker, among other 2016 Republican presidential candidates, have suggested they would pull out on day one.

Virtually the entire Republican presidential field opposes the nuclear deal with Iran. This includes Bush, who has long expressed concern about the negotiations.

In early July, he penned a column for Townhall in which he accused the administration of "desperately accommodating" Iran and sculpting a deal that would likely "offer only short-term political benefits for President Obama, not lasting security benefits for America."

"I'm deeply worried about this agreement because I think it's going to create the possibility of nuclear proliferation in the region and a much more unstable Middle East that will impact us," Bush reportedly said Friday.