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MIL-M-45974(WC)
3.3.4 Functioning firing.  The machine gun shall operate without
malfunctions or unserviceable parts, shall have a cyclic rate of fire of
500 to 650 rounds per minute, and shall withstand a belt pull of 10
pounds.  Testing shall be as specified in 4.5.3.4.
3.3.5 Targeting and accuracy.
3.3.5.1 Targeting.  Nine rounds of a ten-round burst fired from the
machine gun at a range of 100 meters shall be within the 21.6 x 21.8 inch
rectangle in accordance with Drawing 75C21371. Testing shall be as
specified in 4.5.3.4.
3.3.5.2 Accuracy.  Nine rounds of a ten-round burst fired from the
machine gun at a range of 100 meters shall be within or cut the edge of
a 12.6 inch diameter circle.  Testing shall be as specified in 4.5.3.4.
3.3.6 Endurance.  The machine gun shall be capable of firing 10,000
rounds of M59 or M80 ball cartridges, using M13 links, with not more than
the number of malfunctions and unserviceable parts allowed in Table I.
The average cyclic rate of fire for the entire test shall be within the
limits specified in 3.3.4.  Testing shall be as specified in 4.5.3.5.
Table I
Malfunctions and Unserviceable Parts
Code
Malfunction
Number permitted in 10,000 rounds
Loosening of parts (failure
LP
0
of bonding and riveting)
LPs
Loosening of parts (failure
1
of staking)
Failure to feed
FF
4
FEJ
Failure to eject
3
Failure to extract
FEX
1
Other malfunctions
1
OM
Unserviceable
Code
Number permitted in 10,000 rounds
First 5,000
Second 5,000
parts
rounds
rounds
1
0
PAB
Plug, Bolt assembly
1
1
WL
Lock Washer
0
Solenoid
0
S
2
OP
Other parts
7

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