SIG SAUER P556 - Manual (Page 43)

P556 Pistol Operators Manual
43
1511582 VER 08.01.08
b. Remove the firing pin stud
using an aid (small punch, nail,
or pencil) and SLOWLY raise
the bolt head until tension is
released on the firing pin spring;
and
c. Remove firing pin and firing
pin spring from the bolt head.
CAUTION: The firing pin is under spring tension when installed
in the bolt head. Use caution during removal to prevent injury to
yourself and others. The use of eye protection is recommended.