 Silver Bullet is a western @-@ themed steel inverted roller coaster designed by Bolliger & Mabillard located at Knott 's Berry Farm , an amusement park in Buena Park , California . The $ 16 million roller coaster was announced on December 1 , 2003 and opened on December 7 , 2004 . A first rider auction was also held where people would bid on seats to be the first riders . The track is approximately 3 @,@ 125 feet ( 952 m ) long and the lift hill is about 146 feet ( 45 m ) tall . The ride lasts two minutes and thirty seconds and features six <unk> including a vertical loop , cobra roll , zero @-@ g roll , and two <unk> . 
