The SG 553 is a Swedish assault rifle which is equipped with the latest technology. It is chambered for 5.56×45mm NATO rounds and offers a 30-round magazine. In 2012, this weapon was slightly improved and received an extended barrel as well as a larger handguard to accommodate a new front sight. The SG 553 has been painted with a digital camouflage pattern, which makes it even more effective in combat. Exchange your Soul Gems for the StatTrak™ SG 553 | Phantom! The SG553 is an assault rifle that comes with a 30-round magazine and the possibility of attaching a silencer. For snipers, there is also an option to attach a bipod, which allows you to stabilize your shots. The SG 553 is a high-precision Swedish assault rifle which was first introduced in the 1990s. It has since been adopted by the armies of over 20 countries. The model is currently available in several versions, including an integrally suppressed variant.