Crysis

SCAR

Although called the SCAR in-game, the weapon used by the Marines and the player is actually a Heckler & Koch XM8 chambered for 6.8x43mm. The assault rifle can be customised in-game. You can attach either a reflex sight, assault scope or a sniper scope for sights. You can also attach either a light or rifle Laser Aiming Module for targeting purposes. Another nifty feature is the ability to attach either a tranquiliser launcher or a grenade launcher. Finally, you can attach a flash and sound suppressor to the weapon.

FY-71

The FY-71 is the main weapon for the North Korean soldiers in-game. It is actually based on the AK-74M, chambered for 5.35x39mm. Like the SCAR, it features the ability to be customised. For scopes and sights, you can either attach a Reflex Sight, an Assault Scope or a Sniper Scope. For lights and lasers, you can attach a rifle flashlight or a Laser Aiming Module. In addition to that, you can attach a grenade launcher or tranquiliser attachment. Then, there is the silencer. One very useful thing about the FY-71 is that you can choose between normal ammo or inciendary ammo, once you get it.

MPX8

The MPX8 is the main weapon for North Korean forest patrols. It closely resembles an MP7A1 albeit somewhat longer and uses 4.6x30mm rounds. The MPX8 can also be seen in the hands of some North Korean nanosuit soldiers. The MPX8 is similar to the other weapons in the feature that it can be customised. You can attach all the attachments on the rifles except for the launchers. It also sports full auto and semi-auto fire.

DSG-1

As the name implies, it's based on the DSR-1 with a forward mounted 10 round detachable box magazine and barrel that resembles that of the H&K PSG-1. It can be equipped with all scopes. The weapon is used by North Korean soldiers and North Korean nanosuit commandoes. It presumably fires 7.62x51 rounds.

Bauer SOCOM

Judging from the 20 round magazine, it's most likely based on the (prototype) 4.6x30mm H&K UCP. It is wielded by North Korean and US Marines. It can be dual wielded, suppressed and equipped with a laser/flashlight combination.

Tactical Shotgun

The shotgun in Crysis is based on the Benelli M4 Super 90. It uses 12 gauge shells (fed from an 8-round integral tube magazine) and has an adjustable choke that can increase or decrease the spread. Unlike most video game shotguns the Crysis shotgun has fairly realistic accuracy. It can be equipped with all scopes and laser sights/flashlight.

Hurricane Minigun

A homage to Predator's hand-held M134 Minigun, the Hurricane Minigun can only be used by nanosuit soldiers (both the player and the North Korean commandoes). It fires from a 500-round drum magazine and can be equipped with a laser sight (quite useful as the minigun doesn't have iron sights).

GK8 Gauss Rifle

Used by US Marines and the player. This futuristic electromagnetic rifle fires depleted uranium slugs at 8 times the speed of sound dealing massive damage on impact. Doubling as a sniper rifle and as an anti-vehicle weapon, it has a five round magazine and is very effective against the alien war machines. It can be equipped with all scopes.

AY-69 SMG

Found only in Crysis Warhead, the AY-69 is a compact version of the MPX8 that takes up the handgun slot and can be dual wielded.

FGL40 Grenade Launcher

A six -shot North Korean grenade launcher based on the Milkor MGL. Found only in Crysis Warhead.

Molecular Accelerator

An alien weapon that takes moisture from the air, freezes it into solid form, and fires the resulting ice shards out. It has unlimited ammunition but wil overheat under sustained fire.

Molecular Arrestor

Found only in multiplayer, this is an alien weapon that fires a thermal inversion beam that freezes the target and allows it to be smashed easily.

LAW Missile Launcher

The LAW missile launcher seems to based on the MBT LAW. It is a disposable anti-armour laser guided missile launcher that carries three rounds, and is used by both the US and North Koreans.

C4

C4 demolition pack that can be placed and remotely detonated. Quite effective against tanks if you can sneak up on them.

M15 Anti-Tank Mine

Only useable in multiplayer.

Claymore Mine

Only useable in multiplayer.

TAC Launcher

A handheld nuclear grenade launcher, this weapon is used against the final boss and is a superweapon in multiplayer.

Fragmentation Grenade

The frag grenades in Crysis seem to be based on the M26 hand grenade.

Nano Disrupter Grenade

Found only in multiplayer, these grenades temporarily disable an opponent's nanosuit.

Type 88 "Shi Ten" Machine Gun

The North Korean mounted machine guns are Chinese made Type 88 GPMGs.