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|  MIL-B-70511B (AR)
b.
Inspection lot number.
Computed measurement of firing pin indent for both
firing mechanism released and not released.
4.5.6 Interchanqeability test.
4.5.6.1 M2 Bolt. Weapons shall be tested for interchange
of parts by disassembly and reassembly of parts using parts from
a prearranged system specified below. Interchange of parts shall
be accomplished by dividing the parts of each M2 Bolt into 10
groups of non-mating parts as shown below and distributing the
groups into 10 different trays until each tray contains a
complete M2 Bolt. Groups of parts from M2 Bolt number 1 shall be
taken in order and placed in tray 1 through 10; groups of parts
from M2 Bolt number 2 shall be taken in order and placed in trays
2 through 10 to 1; groups of parts from M2 Bolt number 3 shall be
taken in order and placed in tray 3 through 10 to 2, etc. The M2
Bolt shall be reassembled using only those parts which are in the
same tray. The reassembled M2 Bolt shall be tested for
functioning, firing pin indent, and cyclic rate of fire as
specified in 4.4.2, 4.4.3, and 4.4.4 respectively. Disposition
of interchangeability M2 Bolts shall be as specified in the
contract.
Groups of non-mating parts
Group II
Group I
Pin, Firing (8448503)
Firing Pin Retainer
Spring, Ejector (12598577)
(8448504)
Pin, Ejector (11833497)
Group IV
Group III
Plate, top (11833496)
** Screw, Carrier (8445808),(2)
Bolt (11833495)
Group VI
Group v
Carrier, Bolt (11833494)
Pin, Locating (11833499)
Group VIII
Group VII
** Extractor (8448512)
Pin, Extractor (8448513)
Group X
Group IX
Pin, Spring (MS16562-98)
Extractor (11833498)
All items preceded by a double asterisk (**) shall
Note:
be replaced during interchangeability test. Parts
inadvertently damaged during interchange may be
replaced without penalty when authorized and
verified by the Government representative
witnessing the test.
PACKAGING
5.
17
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