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|  MIL-B-70511B(AR)
AMENDMENT 2
PAGE 12
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4.3.3.2, under Performance Tests:
4.5.2"
Delete
90
3.4.2
"Function
4.3.3.3.2/4.5.2"
60
3.4.2
and substitute "Function
PAGE 13
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4.3.3.3.1, line 2: Delete "If 4 or more" and substitute "If 3 or
more".
*
4.3.3.3.2, line 4: Delete "A total of 21 or more" and substitute
"A total of 14 or more".
*
4.5.2, line 2: Delete "Government approved M16, M16A1 and M16A2
Rifles" and substitute "Government approved M16A1 and M16A2
Rifle".
*
4.5.2.1: Delete in its entirety and substitute the following:
"4.5.2.1 Function (first article). Six M2 bolts shall be
function tested during first article by firing 30 rounds with
each bolt. Six magazines, fully loaded with 5.56mm, M862 Short
Range Training ammunition shall be used for this test. Three
M2 Bolts shall be tested in the M16A1 Rifle and three in the
M16A2 Rifle. For the M16A1 each thirty round firing shall
consist of two bursts of approximately three rounds with the
remaining rounds fired in one burst. With the M16A2, all
firings shall be in three round bursts."
PAGE 14
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4.5.2.2, under Function (Lot Acceptance): Delete:
"15
M16
Semi
30
Ml 6
Auto
15
30"
*
4.5.3: Delete in its entirety and substitute the following:
"4.5.3 Cyclic rate. Thirty (30) rounds shall be fired in 3
round burst firing from a 30 round magazine with the M16A2
rifle. The cyclic rate of fire measurement shall be taken on a
three round burst, occurring on the 6th or 7th trigger pull.
All malfunctions shall be recorded."
2
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