James Bond (Roger Moore) carries his usual .32 ACP Walther PPK throughout the film, although he never has the chance to fire it. Bond's CIA friend Harold Strutter (Lon Satton) also carries a PPK.
Walther PPK - 9x17mm (.380 ACP)
Bond's PPK is destroyed by Tee-Hee (Julius Harris). The front of the barrel was replaced with thin metal and hollowed out so it could be twisted easily; this can be seen by the uneven reflection on this part of the prop.
Another agent with a Detective Special on a belt holster walks up to Felix Leiter (David Hedison).
Smith & Wesson Model 19 Snub Nose
Rosie Carver (Gloria Hendry) carries a Smith & Wesson Model 19 Snub Nose, "standard CIA issue" with the serial number filed off. Quarrel Jr. (Roy Stewart) carries a similar revolver. Rosie holds him at gunpoint with his own gun, which he points out has had the "safety" on the entire time. Several of Kananga/Mr. Big's henchmen also carry Model 19s.
Smith & Wesson Model 19 Snub Nose - .357 Magnum
One of Mr. Big's men holds a Model 19 Snub on Bond.
One of Mr. Big's men waits for Bond to emerge in the alley in Harlem.
Rosie enters Bond's hotel room with her revolver drawn.
Bond, after disarming Rosie, holds her gun on her while she fixes her wig.
Bond recognizes the revolver as "standard CIA issue".
Rosie sees a revolver very similar to hers on Quarrel Jr.'s boat.
Rosie emerges from underneath the boat with the revolver drawn.
Rosie with Quarrel Jr.'s Model 19.
Colt Python
Bond picks up a Colt Python with a 2 inch barrel in the alley from one of his would-be killers in the alley before he is stopped by Strutter.
Smith & Wesson Model 29 with nickel finish - .44 magnum.
Bond in a promotional photo with his .44 Magnum.
Bond, .44 Magnum in hand, watches over Solitaire.
Bond aims his S&W Model 29.
Bond intimidates Solitaire's captors with his .44 Magnum. Unfortunately Bond only had the six cartridges in the cylinder. After expending the initial load, he throws it away. Evidently he neglected to bring a reload.
Compressed air pistol
Bond takes a pistol firing compressed air pellets when going to rescue Solitaire on San Monique. Kananga (Yaphet Kotto) gets ahold of it and is mystified by it.