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Page Title: Rear sight assembly (11699796).
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MIL-M-45945A
3.3.1.3  Flash  supressor  (7269034).  The  flash  suppressor
shall be fastened securely to the barrel assembly (7269028) by
the staked pin (12599983) so that there shall be no relative
movement.
3.3.1.4 Gas cylinder extension (7269030), nut (7269031 and
plug  assembly  (9362515). The gas cylinder extension and nut
shall be assembled securely to the gas cylinder (7269036) so that
there shall be no relative movement and shall be retained by the
lock washers (7269035).  The gas cylinder plug assembly shall be
assembled to the gas cylinder and shall be retained by the
captive lock washer (9362513).
3.3.2 Rear  sight  assembly  (11699796). The rear sight base
(11699797) shall be staked securely to the dovetail recess of the
receiver assembly (11686308), after targeting and accuracy firing
test,  so that there shall be no relative movement of the rear
sight base.  The rear sight (11699799) shall be retained by the
rear sight screw (11699798) and nut (11699763) so that there
shall be no relative movement of the rear sight on the screw.
The rear sight shall move manually between the horizontal and
vertical positions and shall be held in the vertical position
under spring action until manually changed.
3.3.3 Barrel  lock  (11010184).  When in the locked position,
the barrel lock shall be capable of being manually unlocked by
the application of finger pressure to the barrel lock retaining
ring (11010377) so that the barrel lock is moved through its full
range of travel to the right.  When unlocked, the barrel lock
shall be capable of being pivoted manually between the closed
(horizontal) and open (vertical) Positions. It shall be held in
the open position by spring action permitting the barrel assembly
with biped assembly (7269027) to be assembled to or disassembled
from the receiver assembly (11686308).  When the barrel lock is
returned to the closed position it shall lock under spring
When in the closed position, the barrel lock shall be
action.
capable of retaining the barrel assembly with biped assembly in
the receiver assembly.
3.3.4 Bolt  assembly  (11010357).  With the cover assembly
(7269114) opened and the bolt assembly disengaged from the
operating rod yoke (9362509), the bolt assembly shall move of its
own weight through its full range of travel in the slideways of
Firing pin protrusion shall be
the receiver assembly (11686308).
The bolt assembly shall be proof
as specified on dwg l1010357.
and magnetic particle inspection marked in accordance with dwg
11010358.
6

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