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|  MIL-R-63997B(AR)
4.5.2.2
Classification
of
defects.
SAMPLING
REQUIRE-
INSP.
DEFECT
DEFECT
PROCEDURE
MENT
METHOD
NO.
Lower Receiver, P i s t o l G r i p ,
a n d Stock Assembly G r o u p :
100%
3.3.1
Manual
Failure of
Lower Receiver.
1.
upper receiver to hinge
without binding on the pivot
pin when takedown pin is
withdrawn to stop position.
100%
3.3.1
Manual
Failure of
Lower Receiver.
2.
lower receiver to readily
disassemble from upper re-
ceiver when pivot pin is
withdrawn to the stop
position.
100%
3.3.2.9
Manual
Pivot Pin and Takedown Pin.
3.
Failure to move throughout
their full range of travel
without binding and be re-
trained in their extreme in-
and-out position by the
detents.
100%
3.7
Visual
Automatic Sear Group.
4.
Burrs, cracks, or mutilation
of hammer catch surface and
bolt carrier contact for
the sear.
100%
3.7 and
Visual
Automatic Sear Group.
5.
drawing
Mutilation, distortion, or
improper assembly of sear
spring.
100%
3.3.2.2
Manual
Automatic Sear Group.
6.
Failure of sear group to
return to rest position
under spring action.
15
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