The SG 552 is a fairly powerful assault rifle available exclusively to the Terrorists. Due to the AK-47 being $1000 cheaper and the SG552 having less damage per bullet, it's a much less commonly used weapon. However, it does not go without its fans, as many players will still use this weapon due to its good accuracy. It is an all-around weapon in terms of statistics and popularity.
The SG 552 is moderate weight weapon. While wielded, the player's movement speed is 230 units per second (default speed is 250), meaning they suffer moderate-heavy speed reduction. While zoomed in, their movement speed is 200 units per second. The SG 552 is one of the many weapons able to shoot underwater.
Use this weapon at full auto and aim for the chest when at close range
When at long range, use the scope. When zoomed, the gun has a lower rate of fire but better accuracy so use this to your advantage.
Notably, when the zoom-in function is used, the recoil is much higher thus some players tend to not use the scope at all.
Do not spray bullets when you are using the scope. The recoil associated with the Krieg 552 can disorientate users and lead to a severe decline in accuracy, in a firefight, getting the recoil too high can spell your doom.
Crouch and burst fire 3 shots to gain more chances of hitting your enemy.
Use 3-round burst at medium range due to its spread.
If possible, aim for the head by either spraying at close ranges or use the scope to increase accuracy for long ranges.
Players should be aware in how to use the scope. In certain maps, it may not be wise to use the scope at all.
In comparison to the AUG, the Krieg 552 inflicts slightly more damage and has shorter reload time but has higher spread and recoil.
The SG 552 in the German version of Left 4 Dead 2 is a direct port of the Counter-Strike: Source version, its scope can be used too, and its cartridge capacity is 50 rounds instead of 30, it can fire full-auto when scoped.
In Condition Zero and Deleted Scenes, the animation of this weapon uses the BETA animation. Also it has different firing sound in Deleted Scenes.
The design of magazine can tell its user it remaining ammunition, this feature is removed from the game due to the reduction of the memory.