Grand Theft Auto III
The following weapons were used in the video game Grand Theft Auto III:
The first firearm Claude uses is the Colt M1911A1. It is used by the Liberty City Police Department and every gang in the city. The notable exception being the Diablos in the beginning of the game, they only carry bats until Claude betrays them for King Courtney's Yardie Posse. It is erroneously referred to as a "nine" by Luigi Gotterelli (Joe Pantoliano), Joey Leone (Michael Rapaport), and even the clerk at AmmuNation. It has a twelve round magazine capacity. It is first seen when Catalina shoots Claude in the opening bank robbery, then is later given to Claude in either Pump-Action Pimp or Farewell 'Chunky' Lee Chong, depending on which mission the player chooses first, and becomes available for purchase at the Portland AmmuNation afterwards.
Remington 870 Folding Stock
The shotgun in the game is a Remington 870 Folding Stock. It has a slow rate of fire, but is very powerful at close range. It is used by the Leone mafiosi (after Claude assassinates Salvatore Leone (Frank Vincent), the clerk at AmmuNation, Curly Bob in Cutting The Grass, and the guy (Carlos) who kills Marty Chonks at the end of Her Lover. They can be found with five rounds of ammunition inside of the LCPD police cars, or can be purchased from Phil Cassidy. It first appears in the hands of Claude during the opening bank robbery, then later in the hands of the Pump-Action Pimp.
IMI Micro Uzi
The IMI Micro Uzi, with the folding stock removed and the muzzle painted orange (like an airsoft gun), is carried by the LCPD SWAT team, the Yakuza, the Colombians, and the Southside Hoods. The Leones and the Triads go bananas on each other with Micro Uzis during Triads And Tribulations. Claude uses it to perform drive-by shootings. It is first seen being used by Pump Action Pimp's Diablo bodyguard and is available for purchase at the Portland AmmuNation after Cipriani's Chauffeur, and later at the Staunton Island AmmuNation. It features an orange tip on the muzzle, a feature usually reserved for toy weapons, though real life criminals often disguise their weapons by painting the muzzle orange. It has a 25-round magazine capacity.
Referred to as an AK-47, it more closely resembles a Romanian version, the WASR-2. (Note the black pistol grip, and the slightly curved, thinner, solid black magazine.) It is used by the Colombians and, strangely, the FBI. It can be purchased at the AmmuNation on Staunton Island. It is first seen in Bomb Da Base, being used by the carteleros guarding the freighter.
Referred to as an M16, it more closely resembles the similar Armalite AR10. (Note the design of the forearm, the shape and thickness of the barrel, the lack of a forward assist, and the relative thickness of the magazine). It can be manually aimed in first-person mode. It has a 60-round magazine in-game, along with a ridiculously high rate of fire. It is carried by Phil Cassidy, Colombian gangsters, and the U.S. Army National Guard. Making its first appearance when the Colombians ambush the prisonbound police convoy to kidnap the Oriental Gentleman, it first appears in actual gameplay during Under Surveillance in the hands of the Leones' vengeful hit squad. It can be purchased from Phil Cassidy after rescuing him from the Colombians.
The Remington 700 must be manually aimed to be fired. It is first used by Claude to cover 8 Ball while he rigs the cartel's freighter for scuttling during Bomb Da Base. It can be purchased from the AmmuNation on Staunton Island.
The M72 LAW must be manually aimed. Claude holds it backwards and uses the endcap as a grip. He uses one to shoot down Catalina's helicopter in the final mission in the game, The Exchange. It is available for purchase from Phil Cassidy after Claude rescues him from the Colombians.
A flamethrower appears in the game, and can set anything flammable on fire. It can be purchased from a garage in Shoreside Vale. Claude uses it to stir fry some triads in Trial By Fire.
The standard hand grenade in the game is the M67 HE-Frag. First gifted to Claude by Toni Cipriani (Michael Madsen) in Taking Out The Laundry. They are available for purchase at the Staunton Island AmmuNation.