Manual

SIG 556 Operators Manual 19 P/N 1511203 VER 12.7.2
Bolt Catch Lever
The SIG 556 rifle is equipped with a bolt catch lever. The pur-
pose of the bolt catch lever is two-fold. The bolt catch may be
manually engaged with the bolt pulled to the rear (open position).
This action locks the bolt open, allowing an unobstructed view of
the chamber area. During firing, with a magazine inserted, the
bolt catch will lock the bolt open after the last round in the
magazine has been expended, giving a visual indication the
magazine is empty and allowing the shooter to visually check that
the chamber is clear. The bolt is engaged by the bolt catch lever
when the bolt catch lever is pushed upward by the magazine
follower during the cycle of operation. The bolt can be manually
released (closed) by either depressing the bolt catch lever or by
pulling rearward on the charging handle and releasing.
CAUTION: Dropping or jarring the rifle with the bolt locked
open can cause the bolt catch lever to disengage. If a magazine,
loaded with ammunition, is inserted in the rifle when this occurs,
a round will chamber with the potential for an unintentional
discharge. ALWAYS handle the rifle as if loaded whenever a
magazine is inserted in the rifle. ALWAYS place the safety lever
in the “S” (SAFE) position and unload the rifle whenever
shooting is complete.
SIG556 OM 12.06.qxp 1/8/2007 2:25 PM Page 19