Only a few firearms make appearances in this film, the most notable one is the Model 28, carried and used by leader of the Rogues gang, Luther (David Patrick Kelly), who notably uses is to shoot Cyrus (Roger Hill).
During the scene were some of the Warriors are hanging out with the female gang known as the Lizzies, one of the Lizzy members pulls a Smith and Wesson Model 10 Revolver, with a missing hammer spur, out of her boot.
As the title says, check this out, its the one and only Sonny Landham who portrayed Billy in the 1987 flick Predator, but in this movie he has a small scene as a local cop on the beat.