Define Berretta Meaning

An insert from "Trapped In the Closet" by R.Kelly.

"Checks under the bed (bed)
then under the dresser (dresser)
He looks at the closet (closet)
I pull out my berretta (berretta)
He walks up to the closet (closet)
He’s close up to the closet (closet)
Now he’s at the closet (closet)
Now he’s opening the closet (closet, closet, closet)

“I met this girl at the bodja club and she told me she didn’t have a man”
Then he said “man please I'd kill you if you didn’t have that gun in your hand”