Also known as: SG552, SG553
A 5.56 ×45mm NATO Assault Rifle manufactured by SIG Sauer. Designed as the shorter variant of the SIG SG550, but with its gas piston fixed to bolt (like the AK), recoil spring located behind the bolt (like the MP5), and handguard with circular ventilation.
This tag also applies to the slightly improved SIG SG553.