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MIL-M-45013E (AR)
TABLES II. Functioning firing test schedule.
All Other
First 500
Type of Firing
Machine Guns
machine Guns
20 rounds
Interrupted
50 rounds
Assigned Barrel
Bursts 1/
One Continuous
20 rounds
50 rounds
Burst 2/
Interrupted
20 rounds
50 rounds
Spare Barrel
Burst 1l
One Continuous
20 rounds
50 rounds
Burst 21
1/
The trigger shall be intertionally released to stip firing at
least five times during the 50-round and at least two times
firing the 20-round interrupted burst firing.
2/ Rate of fire shall be measured and recorded on every tenth
machine gun during the continuous burst firing of each barrel
using a timer gage conforming to drawing 7273920. Failure of
any sample machine gun to meet the cyclic rate of fire
requirement shall be cause for measurement of the cyclic rate
of fire on the other nine machine guns represented. If any
one of the other nine machine guns fail the cyclic rate
requirement, the ten machine guns are rejected, and the
contractor shall perform a failure analysis and contact the
Procuring Agency for instructions. If none of the other nine
machine guns fail the cyclic rate requirement, only the
sample machine gun that failed shall be rejected.
4.5.6 Targeting and accuracy firing test.
4.5.6.1 Sight setting. Each machine gun shall be tested
with both its assigned and spare barrel assembly with biped
assembly with the same sight setting for compliance with the
targeting and accuracy requirements of 3.4.6. The ammunition and
links shall be in accordance with 4.4.4.3.
4.5.6.2 Firing fixture. Machine guns shall be tested using
the test fixture conforming to drawing 7273907. With the rear
sight set at zero indage and the elevation scale set so that the
scale retaining screw is approximately at the midpoint in the
slot, the sight aperture slide shall be brought to the elevation
setting indicated on the targeting and accuracy diagram. With
30

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