SIG SAUER SIG556xi - Manual (Page 48)

48 www.sigsauer.com
a cartridge fires when the firing pin impacts the primer, and also can be “discharged” before it is chambered
if its primer receives a sharp blow. if a cartridge hangs up, jams, or binds when being chambered or when
fed from the magazine into the chamber, do not attempt force it into the chamber by pushing or striking the
charging handle. any jam or feeding problem is a signal to immediately stop using the rifle until the issue
can be determined. most failures of a cartridge to feed or to chamber are caused by a damaged magazine,
improper handling, or defective ammunition. cartridge jams can result in the potentially dangerous situation of
a cartridge discharging before it is chambered. if this occurs, the cartridge case will rupture and its fragments
will fly out of the rifle with sufficient force to cause injury. always wear shooting glasses and hearing
protectors, and keep your face away from the chamber!
to minimiZe malfunctions (“Jams”)
Malfunctions can largely be avoided by cleaning the rifle per section 8.1:
• after each firing session;
• When performance requires switching the gas valve to position 2;
• Whenever a buildup of firing residue is suspected; or
• Whenever the rifle is exposed to extreme environmental
conditions (rain, snow, freezing temperatures, etc.).
waRning