Republican Arkansas Gov. Asa Hutchinson expressed his willingness for a “conversation” on raising the minimum age to purchase a semiautomatic rifle from 18 to 21 and “AR-15-style weapons” amid fresh talks on gun reform following a deadly mass shooting in Texas last week.

Hutchinson told CNN’s John Berman on Tuesday that he supported an ongoing bipartisan dialogue between a group of U.S. senators to potentially draft new gun control legislation. Hutchinson said one area the bipartisan congressional group should look at is “the AR-15-style weapons,” and whether the minimum age to purchase one should be raised.

“You have to at least have a conversation about that,” said Hutchinson, a stalwart defender of the Second Amendment.

The Arkansas governor is one of a growing number of Republicans who are expressing a willingness for some gun reform after the tragedy in Texas.

On Sunday, Rep. Adam Kinzinger (R-Ill.) said he was a “strong defender of the Second Amendment” but that he was “getting sick of seeing the mass shootings” and was open to an assault weapons ban. Rep. Chris Jacobs (R-N.Y.) also signaled an interest in a ban last week.

Some Republicans are still hesitant to enact tougher reform laws, but the age limit to purchase an assault rifle has become a ground for a potential compromise. Only six states have raised the minimum purchase age for a long gun from 18 to 21: Florida, Washington, Vermont, California, Illinois and Hawaii., according to the Giffords Law Center.