Automation SIG SG 550 is based on the disqualification of powder gases from the bore, G36 two lugs.
Recoil is located above the barrel around the gas piston rod. When firing it is compressed between a special collar on the rod and the anterior wall of the receiver.
This version of the tool is a samozarâdnuû sniper rifle.
|Model to replace||Combat Sniper (PSG-1)|