The following weapons appear in the video game Counter-Strike:
Note 1: Many of the weapons in Counter-Strike have correct models in third-person view, but are flipped in right-handed first-person view, causing features like the ejection port, mag release, forward assist, and brass deflector to be placed on the wrong side of the receiver. This is because the weapon animator was left-handed, and initially animated the right-handed weapons with left-handed operation in first person view, which were later simply flipped for right handed players.
Note 2: The official retail version of the game features fictional weapon names such as "CV-47". However, some older mod versions feature real weapon names. This page primarily covers the retail version of the game.
Called the "9x19mm Sidearm" in-game. 2nd Gen Glock 17C's are the starting weapon for the Terrorist faction. It has semi-automatic and (incorrect) 3-round burst firing modes, and an incorrect 20-round magazine capacity (in reality this would only be achievable with a 19-round magazine and an extra round in the chamber).
Heckler & Koch USP45 Tactical
Called the "K&M 45 Tactical Pistol" in-game. The Heckler & Koch USP45 Tactical possesses a stainless steel slide and odd overall blue tint. It serves as the starting weapon of the Counter-Terrorists. It comes with a detachable sound suppressor.
Called the "228 Compact" in-game. It is a SIG-Sauer P228 incorrectly chambered in .357 SIG. The P228 was never designed to handle the hotter .357 SIG round do to its lighter weight cast slide that could only take the higher pressure rounds if an overly heavy spring were installed. The .357 SIG round was first introduced with the SIG-Sauer P229 which had a different heavier CNC machined steel slide that could take the high velocity return with a standard spring and not damage the pistol. It also holds 13 rounds as if it's still in the proper 9x19mm chambering even though it should hold 12 rounds if it was actually a P229 chambered in .357 SIG.
IMI Desert Eagle Mark XIX
Named the "Nighthawk .50 C" in-game. It can be identified as the Mark XIX version of the Desert Eagle because of the weaver rail over the barrel and the taller cocking serrations on the slide. It correctly holds 7 rounds of .50 Action Express. Counter-Stike is the game that coined the ever popular nickname "Deagle" for the Desert Eagle.
Named the "ES Five-Seven" in-game. The FN Five-seveN is exclusive to the Counter-Terrorists.
Beretta 92G Elite II
The Beretta 92G Elite II is the only dual-wielded weapon in the game and incorrectly has an all-black finish. Called the ".40 Dual Elite", it is a Terrorist exclusive weapon(s). Although its name would imply it's a 96G Elite II model chambered in .40 S&W, each pistol holds 15 rounds like the 92G Elite II in 9x19mm for a total of 30 rounds, as where the .40 S&W model would hold 11 rounds in the standard magazines shown for a total of 22 rounds.
Benelli M3 Super 90
Dubbed the "Leone 12 Gauge Super", The Benelli M3 Super 90 in-game is fitted with a Surefire dedicated weaponlight fore-end and heat-shield. It holds 8 rounds, despite being modeled with the shorter 5-round tube magazine.
Benelli M4 Super 90
The Benelli M4 Super 90 appears as the "Leone YG1264 Auto Shotgun" / "XM1014". It correctly holds 7 rounds.
Called the "Schmidt Machine Pistol". The Steyr TMP is exclusive to the Counter-Terrorists. It comes with a non-detachable suppressor.
The MAC-10 retains its name because the company holding the rights to the name went bankrupt. Exclusive to the Terrorist faction. The model is erroneously shown as a closed-bolt weapon. It is equipped with a front strap in first person though the third person model lacks it.
Heckler & Koch MP5A5
The Heckler & Koch MP5A5 appears as the "K&M Submachine Gun" in-game.
Heckler & Koch UMP45
The Heckler & Koch UMP45 appears as the "KM UMP45" in the game. The charging handle incorrectly locks back on its own before reloading. It correctly holds 25 rounds. It has a Knight's Armament grip attached via an underbarrel mounted rail.
The FN P90 is called the "ES C90" in-game.
The FAMAS F1 is dubbed the "Clarion 5.56". A exclusive primary weapon for the Counter-Terrorists.
IMI Galil ARM 7.62
The IMI Galil ARM appears as the "IDF Defender" in-game, and is only available to the Terrorists. It is modeled after the 7.62x51mm NATO version, but has the 35-round capacity of the 5.56x45mm variant and is stated in-game to be chambered after this latter caliber.
The Colt M4A1 is called the "Maverick M4A1 Carbine" in-game and is only available to the Counter-Terrorists. It comes with a detachable suppressor. The player character will chamber it by pulling the forward assist instead of the charging handle. It has a Knight's Armament railed handguard.
The Type III AK-47 is called the "CV-47" in-game and is only available to the Terrorists.
Steyr AUG A1
The Steyr AUG A1 is simply named the "Bullpup". It is fitted with a gray stock and like the USP45 Tactical, it has an odd blue tint. Only available to the Counter-Terrorists.
SIG SG 552
The SIG SG 552 is named the "Krieg 552" in the game. Only available to the Terrorists. It is fitted with a scope to bring it on par with the CT's AUG A1. It incorrectly holds 30 rounds in a 20-round magazine.
The Steyr Scout is called the "Schmidt Scout" in-game. It has a Steyr made extended magwell module and correctly holds 10 rounds.
Accuracy International Arctic Warfare Magnum
The Arctic Warfare Magnum appears as the "Magnum Sniper Rifle". It holds 10 rounds but in reality the AWM only has a 5-round capacity. It is modeled with front sights from the G22.
Notably, some in-dev versions of the original mod incorrectly called the weapon the AWP, a 7.62x51mm NATO police variant of the Arctic Warfare. It seems that the developers intended to portray an AWP (since the AWP does have a 10-round magazine), but ended up modeling an AWM. The AWP name would prove to be the far more commonly used name however (likely because "Magnum Sniper Rifle" is a mouthful, and the popularity of CS as an eSport as well as mods that restore real weapon names leading to the widespread use of the name AWP), and became the official weapon name in Counter-Strike: Global Offensive.
SIG SG 550 Sniper
The SIG SG 550 Sniper is only available to the Counter-Terrorists and named the "Krieg 550 Commando". Like the SIG SG 552, it incorrectly holds 30 rounds in a 20-round magazine.
Heckler & Koch G3SG/1
The Heckler & Koch G3SG/1 is referred to as the "D3/AU-1" by the game and has an odd green tint. It can only be bought by the Terrorist faction.
Light Machine Guns
FN M249 SAW Para
The FN M249 SAW Para retains its name as the "M249". It is the only available machine gun and among the most expensive weapons in the game. It lacks a stock, fires at an unrealistically slow rate of fire (600 RPM in comparison to 650-900 RPM in real life), and for some reason it uses a tiny feed cover that opens to the right.
M7A3 CS Gas Grenade
The Smoke, HE, and Flashbang grenades are all modeled after the M7A3 CS gas grenade, complete with an "M7A3" markings on the grenade. The Smoke Grenade model has a green stripe, the HE grenade has red stripes, and the Flashbang is black throughout. It is likely that their models originated from the cut "CS Grenade" (which had yellow stripes), their textures slightly modified and used as the models for the three grenades in-game.