During the first 1935 flashback, Hoffa's friend Billy Flynn (Robert Prosky) holds a Colt New Service on Bobby Ciaro (Danny DeVito) when Bobby holds Hoffa at knifepoint.
Bobby Ciaro (Danny DeVito) keeps a Smith & Wesson Model 19 Snub in a shoulder holster in 1975, giving it to Jimmy Hoffa (Jack Nicholson), who places it in his shoe. Later, when Bobby reaches for his Model 19, he realizes he had given it to Hoffa as he grabs his empty holster.
Inside the roadhouse, Bobby Ciaro (Danny DeVito) checks a hammerless shotgun, which Hoffa had referred to as a lupara, in anticipation of the meeting with the mobsters.
Most clearly seen in the deleted scenes, Bobby Ciaro (Danny DeVito) hands a Remington Model 30 to mobster Carol "Dally" D'Allesandro (Armand Assante) by dramatically pulling back the bolt behind him. D'Allesandro then fires at a beer bottle, missing. Jimmy Hoffa (Jack Nicholson) takes the rifle and fires the same shot, hitting the bottle. D'Allesandro, Hoffa, and Frank Fitzsimmons (J.T. Walsh) all carry these while out "hunting".
As Hoffa and D'Allesandro talk about the pension fund loans, Bobby Ciaro (Danny DeVito) spots a deer and pulls out his M1911A1, firing four shots into it and causing the other Teamsters to jump to the ground, not expecting to actually hear any gunshots on the hunting trip. While telling the story seven years later before his Senate committee hearing, Hoffa explains that Bobby then tried to skin the deer with a nail file since he didn't have a knife.
Bobby Ciaro (Danny DeVito) pulls a stainless Smith & Wesson Model 49 Bodyguard out of his shoulder holster, using it to intimidate Sol Stein (Cliff Gorman) when going to meet D'Allesandro. He later draws it when he thinks he hears gunshots (but it turns out to be a beer keg bursting).
The mob hitman (Frank Whaley), disguised as a truck driver, draws a suppressed .32 ACP West German Walther PP from his waistband during the film's end to shoot and kill both Jimmy Hoffa and Bobby Ciaro.
