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Sight, Reflex: M24C
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MIL-S-777B(MU)
(Copies of specifications, standards, drawings and packaging data
sheets required by suppliers in connection with specific procure-
ment functions should be obtained from the procuring activity or
as directed by the contracting officer.)
3.
REQUIREMENTS
3.1 Materials.- Materials shall be in accordance with drawings,
material specifications, and general specifications forming a part of
this specification.
3.2 Fabrication.-  The reflex sight, shall be fabricated in accord-
ance with Drawing F7648288 and drawings pertaining thereto.
3.3 General specifications.- The contractor shall be responsible
for adherence to, and compliance with, the following requirements of
MIL-O-13830 and MIL-F-13926.
3.3.1 MIL-O-13830
(a) Prisms and mirrors
(b) Lenses
3.3.2 MIL-F-13926
(a)
Order of Precedence
(b)
Dimensions and Tolerances
(c)
Inorganic Protective Surface Finishes
(d)
Part Identification and Marking
(e)
Workmanship
3.4 Environmental.
3.4.1 Storage at extreme temperatures.-  The sight shall not evidence
damage after storage at -80 Fahrenheit (F) and +160F.
3.4.2 Rain.-  The sight shall show no evidence of water penetration
after exposure to a simulated rainfall of 4 to 5 inches per hour for a
period of two (2) hours.
3.5 Performance.
3.5.1 Projected reticle pattern definition.- The projected reticle
pattern image lines shall show no breaks when viewed by reflected light
from the partial reflector.
3.5.2 Open sight.- The line of sight of the open sight, when thrown
into operating position shall be parallel to the line of sight through
the partial reflector within three (3) degrees as measured at the midpoint
of the reticle image.
3.5.3 Focus.-  The reticle image shall focus within 0.25 diopter of
the target focus point when viewing a 10002OO meter target along a line
2

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