Bullitt

Colt Diamondback

San Francisco PD Lt. Frank Bullitt's (Steve McQueen) snubnose revolver. http://stvmcqueen.tripod.com/questions7.html

Winchester Model 1897 pump-action shotgun

The two hitmen that shoot "Ross" and later shoot at Bullitt from the Charger during the car chase use a Winchester pump-action shotgun. It is a Winchester Model 1897 pump action shotgun. The Model 1897 was designed by John Browning and had an exposed hammer like a lever action rifle. The version used by the hitman is what is known as a "takedown" model. After he shoots the Ross impersonator you can see it taken down whne he seperates the barrel/magazine from the reciever. It also appears the the hitman's model has had the barrel cut down to at least 18". Hard to tell if the rifle stock was cut down. The shotgun also appears to be a 12 gauge, but there is no way to make certain.

Colt 1911A1

The real Johnny Ross uses a Colt 1911A1 at the end of the movie when Bullitt corners him at the airport. He uses the 1911A1 to shoot the security guard just before Bullitt kills him.