The latest evolution in CZ’s semi-automatic shotgun line” the 1012 uses a gas-less inertia operating system. Instead of redirecting gas from the barrel to run the action” the 1012 uses a spring within the bolt to store energy during the shotgun’s recoil” spending this energy a split second later to rotate and unlock the twin lugs from the barrel extension and withdraw the spent shell.
CZ 1012, Semi-automatic, 12 Gauge, 28″ Chrome Lined Barrel, 4 piece choke set, Black, Wood Stock,2.75″ And 3″ Chamber, 4Rd, Bead Front Sight 06350