CASSELBERRY, Fla. -- The recent murder-suicide at a local gun range has brought gun rental laws to the public's attention.

Marie Moore, 44, and her son Mitchell Moore, 20, rented guns at the Shoot Straight gun range in Casselberry on April 6.

An hour after arriving, both were dead. Surveillance footage from the range shows Marie Moore shooting her son and then turning the gun on herself.

Marie Moore had a history of mental illness, and her ex-husband said a background check could have saved his son's life.

"It only costs $5 to run a background. To think that could have saved Mitchell's life is hard to live with," Marvin Moore said.

Marie Moore purchased a revolver in 2003, which she used weeks later to try to kill herself and was subsequently held at Halifax Medical Center under the Baker Act.

Shoot Straight's attorney Joerg Jaeger said no one could have known that Marie Moore would use the rented gun to end two lives.

According to sign-in sheets, Marie and Mitchell Moore rented weapons at Shoot Straight on three separate occasions in the months leading up to the shooting.

Shoot Straight said it does not matter how many times someone rents a gun, in accordance with state law they do not run a background check. State law dictates that anyone purchasing a gun be put through a background check, but there is no check for renters.

A few weeks after the Moore's deaths, Jason McCarthy, 26, rented a gun at Shoot Straight and ended his own life. He also had a history of mental instability.

"If it just discouraged somebody from doing it one time, if it actually stopped it one time, then it would be well worth it," Marvin Moore said.

Shoot Straight range manager Larry Anderson said the law needs to be changed. As long as the gun stays on the premises, no background check is required, he said.

Marvin Moore hopes that by going public, he will be able to help change the law.

"If you're listening to anything I have to say, please do something about this law and add it to the gun law. Please. It would benefit everybody," Marvin Moore said.

The Florida Department of Law Enforcement said anyone held under the Baker Act involuntarily or adjudicated as mentally incompetent, would not be allowed to own a gun, but as the law stands now, the same person can legally rent a weapon.

Marvin Moore had talked about filing a wrongful death lawsuit against the shooting range, but he has since changed his mind. He said the suit was not about money, but about bringing attention to the law.

For now, Shoot Straight is no longer renting guns.