Crysis

SCAR

Although called the SCAR in-game, the weapon used by Marines and the player is actually a Heckler & Koch XM8. 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 sleeping dart launcher or a grenade launcher. Finally, you can suppress the weapon itself.

FY-71

Based on the AK-74M.

MPX8

Closely resembles an MP7A1

DSG1

As the name implies, it's based on the DSR-1.

SOCOM

Modeled on the H&K USP