- "Short range assault rifle, with low to medium stopping power depending on the caliber."
— In-game description
Situations and Terrorist Hunt
The SIG SG 556 is a derivative of the SIG SG 550 assault rifle, and is the latest generation of the rifle series. The SIG SG 556 is a semi-automatic rifle manufactured by Swiss Arms AG that chambers the 5.56x45mm NATO round.
In-game, the 556xi is suited for short-to-mid range engagements. While it's fire rate is nothing to shrug off at just below 700 RPM, it still leaves something to be desired in close range combat in comparison to faster firing weapons.
- The 556xi incorrectly fires in full-auto mode in-game, despite the fact that the real SIG SG 556 can only fire in semi-automatic mode.
- In some stills, the 556xi is equipped with a Red Dot Sight or an ACOG Sight, a Compensator or a Muzzle Brake, and a Vertical Grip.