Specifications

TM 05539-IN
0020 00-1
FUNCTION CHECK 0020 00
THIS WORK PACKAGE COVERS
Function Check
INITIAL SETUP
Maintenance Level
Organizational
References
WP 0019 00
Equipment Conditions
Weapon cleared (WP 0012 00)
FUNCTION CHECK
WARNING
Always assume every weapon is loaded until it is determined through visual and physical inspection it
is not. Procedures for clearing/unloading the weapon are outlined in WP 0012 00. Failure to follow
this warning may cause injury or death to personnel.
Whenever the weapon is disassembled beyond normal field stripping, perform a functional check when the weapon is
reassembled. This quick check indicates whether or not the weapon has been properly assembled with all of its components. A
functional check can also reveal the more obvious malfunctions that occur between interactive components of the weapon. To
complete a functional check, perform the following procedures:
1. With the bolt closed on an EMPTY chamber, place the weapon on “SAFE”.
2. Pull the trigger. The firing pin assembly should not disengage from the sear safety cam of the trigger mechanism.
3. With the weapon remaining on “SAFE”, rotate the bolt handle and manipulate the bolt out of battery and up against the
bolt stop. The bolt should manipulate in and out of battery while the weapon remains on “SAFE.”
4. Close the bolt back into battery. Check to ensure that the weapon remains on “SAFE” and will not fire.
5. Push the safety lever forward to the “FIRE” position. The firing pin assembly should remain engaged with the sear and
not fire.
6. Squeeze the trigger. The firing pin assembly should release from the sear. You should hear an audible click.
7. With the safety in the “FIRE” position, manipulate the bolt as in step 3, but vigorously. Bolt should manipulate without
the weapon slam firing.
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