Vince Majestyk (Charles Bronson) is threatened by Bobby Kopas (Paul Koslo) with a ribbed-barrel Winchester Model 1200 shotgun near the start of the film, though Majestyk quickly takes it from him and fires at his truck. Although he returns the shotgun at the end of the scene, Majestyk keeps the exact same shotgun on a gun rack in his home, and uses it during the final shootout. At one point, he gives the shotgun to Nancy Chavez (Linda Cristal) and asks her if she knows how to use it, to which she naively replies "...just point and pull the trigger, right?".
Colt Python
During Frank Renda's (Al Lettieri) breakout, both several mobsters and police use 4" Colt Pythons. Wiley (Lee Purcell) has a Python in her car, which Renda takes and uses for the rest of the film. His right-hand man Gene Lundy (Taylor Lacher) also keeps a Python.
Smith & Wesson Model 10
Both mobsters and police during Renda's breakout also make extensive use of Smith & Wesson Model 10s.
Ithaca 37
One of the local jail guards holds an Ithaca 37; one of Renda's gangsters also uses one to fire at police during his breakout.
Smith & Wesson M76
Some of Renda's mobsters that shoot up Majestyk's watermelons use Smith & Wesson M76s.
Bolt-Action Rifle
During the final gunfight, Majestyk briefly uses a Bolt-Action Rifle of unknown make or model to fire at Renda. He then drops it in favor of a more "hands on" approach with his Mossberg 500.
Smith & Wesson Model 27
While searching Majestyk's melon farm, Renda's Colt Python briefly changes to a Smith & Wesson Model 27.