3 bolt – SIG SAUER SIG556xi User Manual
Page 16
16
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2.1.3 bolt
The bolt consists of two main parts:
• Bolt Carrier
• Bolt Head
a. Bolt carrier: The bolt carrier guides the bolt head, controls the locking and unlocking by means of the cam, holds the
operating rod, and cocks the hammer.
b. Bolt Head: The bolt head locks the bolt assembly, houses the firing pin and extractor and feeds the cartridges from the
magazine to the chamber.
BOlT CARRieR
BOlT HeAD
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