This article or section is based on S.T.A.L.K.E.R.: Clear Sky cut content and may contain inaccurate information or speculation.
The Jackhammer Mk3A1 is an automatic shotgun that was supposed to appear in S.T.A.L.K.E.R.: Clear Sky, but was never realized even as a basic model[1]. The weapon was a famous prototype (never entering full production in real life) that was also featured the contemporary game Fallout 2, much like two other weapons that did get coded as Easter Eggs in Clear Sky, the Bozar and the .223 Pistol.