MIL-DTL-71026A(AR)
3.5.4
Springs.
3.5.4.1 Spring, retention, magazine. The spring shall have
sufficient strength and spring action to assure that the magazine
will remain attached to the weapon mount fixture following the
drop of a one-kilogram weight minimum onto the impact device from
a minimum height of 305 millimeters. When depressed, the spring
shall completely disengage from the weapon mount so as not to
hinder removal of the magazine from the weapon mount.
3.5.4.2 Spring, retention, belt. The spring shall be
properly seated. The spring shall not dislodge from its seated
position during the drop test or any other testing. The spring
shall provide sufficient tension to the belt such that a free
length of cartridges shall not fall back into the magazine. The
force required to pull the cartridges out of the magazine shall
not exceed 2.72 kilograms.
3.5.5 Magazine component interface. The following pairs of
items shall assemble and disassemble without the use of tools and
without damage to components.
a.
Magazine, belt and feedstrap.
b.
Magazine and weapon feed box support (DWG. 9348215).
3.6 Temperature requirements. All requirements stated for
the magazine shall be met under ambient conditions and at the
following temperature extremes:
52o - 3oC
a.
-54o + 3oC
b.
3.7 Workmanship. Workmanship shall be in accordance with
good manufacturing practices and shall in no way impair the
functional performance of the assembly. Magazines shall be free
of cracks, extraneous material, irregularities and blemishes in
the surfaces. Metal parts shall be free of corrosion. The
magazine shall be free of rips, tears, irregular sewing and other
defects. The cartridge silhouette shall be in the proper
location and orientation. The area about the mouth and dovetail
shall be uniform in structure and free of sink marks greater than
.038 centimeter in depth. The gate shall be flush or below the
surface except when the gate is located in the area below the
magazine retention spring. A maximum of 2.54 mm above flush is
permissible in this area.
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