The SG553 is an assault rifle manufactured by Swiss Arms AG (formerly SIG Arms AG) in Switzerland.
The SG553 is an assault rifle manufactured by Swiss Arms AG (formerly SIG Arms AG) in Switzerland.
The SG553 is an improved version of the SG552 and was released in 2009. Even though it mostly resembles the SG552, the SG553 has one key advantage, the recoil spring is now wrapped around the piston rod like in the SG 550/551 models, which address several reliability issues encountered in the SG552 and also allows the usage of the standard SG550/551 charging handle.
A long barrel version of th...
