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|  MIL-C-70725A (AR)
The cartridge shall be compatible with the 5.56mm 20- and 30-
round magazines, as well as, bolts, chambers, barrel bores and
feed systems of the M16Al and M16A2 rifles when equipped with an
M2 training bolt.
3.2 Qualification. A sample shall be submitted for quali-
fication in accordance with the technical provisions specified
herein (see Section 4). The purpose of the qualification is to
verify that a particular contractor's design is capable of
meeting the requirements of this specification. Upon quali-
fication, the contractor's design shall be considered qualified
indefinitely. The contractor shall submit level 3 detailed item
drawings in accordance with MIL-STD-100, MIL-A-2550 and ANSI
Y14.5-82 to the Government for configuration control. All
changes shall be submitted in accordance with MIL-STD-973 for
review and approval by the Government. The Government reserves
the right to subject the revised design to any or all the quali-
fication evaluations specified in 4.3 at the expense of the
contractor.
3.3 First article. When specified in the contract or
purchase order (see 6.2), a sample shall be subjected to first
article inspection in accordance with the technical provisions
herein (see 4.4).
3.4 Performance characteristics.
3.4.1 Primer sensitivity. The average height (h) and
standard deviation(s) of the height of fire shall be such that
h+3s
13" and h-3
2.5".
3.4.1.2 Residual stress. . The cartridge shall not split
when subjected to the accelerated stress test for the applicable
materials.
3.4.1.3 Bullet pull. The force required to separate the
bullet from the cartridge case shall not be less than 156N (35
lbf).
3.4.1.4 Waterproof.
The cartridge shall
3.4.1.4.1 Waterproof (bubble test)
release not more than one bubble of air when tested at a pressure
13.8 kPa (2 psi) below atmospheric pressure for 30 seconds. As
an alternate procedure or for retesting use the waterproof
(firing) procedure below.
5
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