The SG 552 is the shortest version of the 55x-family. Apart from the charging handle (round, steel), externally it appeared to be a shorter version of its bigger brothers, the SG 550 and 551. However, internally, the SG 552 featured several major differences: the gas piston was fixed to bolt (like on a classic AK-47) and the recoil spring was located behind the bolt (like on an MP5) instead of in the gas tube. While SIG claims these changes were necessary for technical reasons on this extremely compact assault rifle, they led to certain reliability issues - unusual for the company. To address this, the SG 552 was updated, resulting in the SG 553. Externally, it can be distinguished from its predecessor by its charging handle (flat black plastic) like on the SG 550 and SG 551. Internally, the SG 553 features a separate gas piston and a recoil spring located in front of the bolt, within the gas tube, again like on the SG 550 and SG 551.
Story[]
The majority of the mercenary guards at Lockwood Manor primarily carry the SIG SG 552. Owen Grady and Claire Dearing are also seen with the SIG SG 552. The SIG SG 552 also makes a prominent appearance when demonstrating the abilities of the Indoraptor.
