A gas-operated weapon system of minimal size and weight that is designed for SWAT team tactical missions. It is highly suitable for any military engagement, especially maritime operations, as well as demanding law enforcement. Options include an adjustable drum dioptre sight or Picatinny rail receiver with adjustable auxiliary iron sights. The long barrel model is designed for shooting rifle grenades and has a bayonet option.
Two versions are available: SG 551 with standard barrel length and SG 551 LB with an extra long barrel. The SG 551 LB is designed with a bayonet option.
PICATINNY ACCESSORY RAIL ADAPTERS
The rifles can be outfitted with different tactical equipment, such as quick detachable Picatinny accessory rail adapters for mounting a vertical fore-grip and/or bipods.
Upper fore-grip with Picatinny rails on both sides to mount tactical lights are also available.
SG 551 can be equipped with the 40 mm Grenade Launcher GL 5140