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|  MIL-M-45013E (AR)
failure analysis (see 6.2) performed by the contractor. At the
discretion of the Government representative, an interchange-
ability retest may be allowed without reconditioning the lot of
machine guns. Failure in the retest shall cause rejection of the
represented lot subject to performance of a failure analysis and
reconditioning and further test. A sample of ten machine guns
from each retest or reconditioned lot shall be tested using the
same procedure described above. Failure of any machine gun in
the sample to meet the interchangeability requirement shall cause
rejection of the represented lot.
4.4.3.4.1.2 Concurrent repair parts. The contractor shall
subject at least two parts from each inspection lot of concurrent
repair parts to the interchangeability test specified in
4.5.7.1.2. Failure of any part to meet the requirements shall be
cause for rejection of the represented lot of parts subject to
reconditioning and further test as a reconditioned lot. A sample
of double the number of parts used in the original test shall be
tested from each reconditioned lot using the test method
specified in 4.5.7.1.2.
4.4.3.4.2 Interplant. When machine guns are manufactured
concurrently by more than one contract, each contractor shall
forward six machine guns monthly, for the interplant interchange-
ability test specified in 4.5.7.2 (see 6.2). The contractor will
be informed of any failure of the machine guns to meet prescribed
requrements. Upon completion of the inspection by the testing
agency, samples may be commercially packaged and will be returned
to the contractor for packaging in accordance with the contract
at the contractor's expense.
4.4.3.5 Endurance testinq.
4.4.3.5.1 Lot size. The first five endurance test lots
shall each consist of 200 machine guns or a month's production,
whichever is smaller. When five successive lots meet the
endurance requirements, the lot size shall be increased to 500
machine guns or a month's production, whichever is smaller. When
five successive lots of the increased size have met the endurance
requirements, the lot size shall be further increased to 1,000
machine guns or a month's production, whichever is smaller. If
rejection of a lot occurs at any time, the next smaller test lot
size criteria shall be reinstated and the above procedure
repeated in returning to the larger lot size.
4.4.3.5.2 Procedure. One machine gun selected by the
Government representative from each endurance test lot shall be
tested by the contractor for endurance using the test method
specified in 4.5.8. If the endurance requirements are not met,
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