MIL-DTL-0060944B (AR)
TABLE III. Function Defect Classification
and Acceptance/Rejection Criteria
Acceptance
Rejection Number
Classification of
Number
Defect
MK19
MK19
Single
MK19
MK19
Single
Shot
Rapid
Rapid
Shot
3/
Fire
Fire
3/
1. Failure to meet Mean
Velocity
1/
--------
2/
--------
Major
2. Standard deviation of
velocity over max.
1/
--------
2/
-------
Major
3. Primer leak as evidence by
perforation of primer cup or
smoke deposit on base plug or
Major
1
1
0
0
cartridge case
4. Projectile lodges in weapon
bore
0
0
1
1
Critical
5. Primer misfire
0
0
1
1
Major
6. Weapon stoppage excluding
primer misfire
--------
0
--------
1
Major
Notes:
1/ Lot acceptable if requirement is met.
2/ Lot rejected if requirement is not met.
3/ M129 Grenade Launcher is used to measure Action Time & Security of crimp of
base plug.
4.5 Methods of inspections.
4.5.1 Check test for deterioration of primers. If the total time between original acceptance of
any lot and the assembly of that lot into the cartridge exceeds two years, or if the primers have been
subjected to adverse conditions, however brief, at any time since previous tests, the primer lot shall be
subjected to and must satisfactorily pass the check test for deterioration specified in MIL-P-60942
immediately before the primer lot is assembled into the cartridge. The test shall be performed at the
facility assembling the primers into the cartridge.
4.5.2 Propellant weight. The propellant quantity shall be determined and then weighed 100
percent. Any charge that fails to comply with the drawing requirement (taking into account machine
accuracy) shall be classified defective and removed from the lot. The accuracy of the machine shall be
determined and the prove-out test performed to validate the machine's ability to remove charges
outside of the drawing tolerance range. The machine must be capable of detecting and rejecting
critical propellant weights, such that the end product contains less than 1 in a million critical defects
(examples machine error rate not to exceed 1/500 and maximum defect rate not to exceed 0.05
percent).
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