Manual

SIG 556 Operators Manual 44 P/N 1511203 VER 12.7.2
the front.
b. With the notch facing up, slide the bolt head shaft fully
into the bolt carrier.
c. Rotate the bolt head to the left until the notch rests in
the cam.
d. Press forward on the firing pin until the bolt head is
fully forward.
8. Install the bolt assembly into the receiver:
a. Hold the receiver muzzle down.
b. Holding the bolt carrier, align the left lug on the bolt
head with the lug channel in the receiver.
c. Ease the bolt assembly forward until the left and right
receiver rails are riding in the rail channels on the bolt
carrier.
d. Release the bolt carrier – it should drop freely into the
receiver until the bolt is fully locked.
e. Depress the charging handle catch and insert the
charging handle into the slot on the bolt carrier.
f. Release the charging handle catch. Tug on the charging
handle to ensure it is secured by the charging handle
catch.
g. Verify correct installation by pulling the bolt to the rear
– it should be connected to the operating rod and move
under the tension of the recoil spring.
9. Connect trigger casing assembly to receiver assembly:
SIG556 OM 12.06.qxp 1/8/2007 2:26 PM Page 44