"Very reliable with RDSS sight system."

The 556S is an assault rifle introduced in Lifeline.


  • Accuracy: 3/5
  • Durability: 4/5
  • Noise: 4/5
  • Recoil: 2/5
  • Can suppress: Yes
  • Scoped: No
  • Weight: 8.2 lbs.
  • Ammo Type: 5.56mm
  • Ammo Capacity: 30

Item ListsEdit

The following item lists contain this item

Note: S=State of Decay storyline; B=Breakdown; L=Lifeline


  • The 556S is based on the SIG SG 556, an American-made civilian variant of the SIG SG 550 due to import restrictions. Unlike the in-game version, the real SG 556 is only capable of firing in semi-auto mode.
  • RDSS is the acronym for Rotary Diopter Sight System.


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