The latest campaign mailer being sent out by Democratic gubernatorial candidate Jeff Greene is being called “repulsive” by National Rifle Association state lobbyist Marion Hammer. Hammer’s comment, made to the Tampa Bay Times, brought a strong response from Greene Wednesday morning.

“Marion Hammer isn’t just a proud NRA member—she’s their hired gun,” Greene said in a statement released by his campaign. “As a father, I find it ‘repulsive’ that people like Marion defend the NRA over the lives of our children. She may not have pulled the trigger, but she has blood on her hands.”

Greene released a copy of the mailer critical of the NRA on Tuesday.

“As a father, I won’t stand by while the NRA turns our kids into targets.” Greene says in the mailer.  Under the message is a picture of lockers in a school hallway with targets in the shape of students; ‘AR Practice’ and the NRA logo are found on the target boards.

“Students should be worried about grades, not guns,” says Greene, a father of three young sons. “When I send my kids to school, I shouldn’t be afraid they’ll be killed in their classrooms. No parent should.”

“Gun violence has ravaged our state and families,” reads the mailer. “Jeff will take on the NRA to make sure schools are safe for our kids and families are safe in our communities.”

“As a mother, grandmother and a proud NRA member for decades, I find his mailer repulsive,” Hammer said in an email to the Tampa Bay Times. “It is clear that Jeff Green is bankrupt of ideas and he has to resort to these dumb ideas to try and get attention for himself and his campaign. When people can’t win on fact, they have to resort to cheap stunts like this.”

The mailer comes five months following the deadly school shootings at Marjorie Stoneman Douglas High School in Parkland that killed 17 people, including 14 students, in February.

Greene, a multi-billionaire from Palm Beach who has pledged to self-fund his campaign, entered the Democratic gubernatorial contest in early June, has taken a tough approach to gun control, much like the the other four Democrats in the contest. In his mailer, he goes on to say he supports a”ban assault weapons and high-capacity magazines, fix the broken and loophole-ridden background check system, and block Trump’s crazy plan to arm teachers.”