Weapons Offenses: A Guy Who Was in Jail on Weakends for Dui, Bought a Gun

My question involves criminal law for the state of: Florida.

a guy was in jail after work and on weekends for DUI in Pennsylvania for 1 year. he later

bought a hand gun with a laser sight in Florida. is it legal?

he is planning on moving to Tennessee in about 5 years.

Weapons Offenses: A Guy Who Was in Jail on Weakends for Dui, Bought a Gun