1S1K or the phrase "one shot, one kill" has gained notoriety in popular culture as a glorification of the "sniper mystique." more information on snipers can be found here Sniper 1S1K is also a prefix used by several online clans or gaming clans Generally as 1S1K is synonymous with snipers then these gaming clans will also use the sniper kit in many of the popular First person shooters such as Ghost Recon, Battlefield 2 and the Call of duty series One of these clans 1S1K CLAN [1] was started in 2004 and is still in existence today with several of its core members from the original clan in '04: