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|  MIL-S-70538A(AR)
3.4 Functioning. The magazine shall be capable of being
loaded with Government accepted ammunition linked with Government
accepted M27 links. The magazine cover and feedstrap shall be
attached. The loaded assembly shall be attached to a M249
machine gun and functioned without any malfunctions attributable
to the assembly. Prior to firing the last 50 cartidges, the
weapon feed cover shall be released and the free length of
cartridges allowed, if possible, to fall back into the magazine.
Should this occur, it will be considered a malfunction. After
functioning, the magazine shall be capable of being detached from
the weapon without difficulty.
3.5 Dovetail mount. The magazine assembly (inert loaded)
shall remain attached to the weapon mount fixture following the
drop of a 5 pound weight, from a height of 18 inches, onto the
magazine at a distance of 5 inches from the dovetail.
3.6 Drop test. When an inert loaded magazine assembly is
dropped from a height of 12 inches, the assembly shall not deform
to the extent that its functional performance is impaired. This
includes any separation of the cover from the magazine which
results in spillage of the ammunition or cracking of the
magazine that would prevent its proper functioning.
3.7 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 2 pound weight onto the impact device from a height of
12 inches. When detressed, the spring shall completely disengage
from the weapon mount so as not to hinder removal of the magazine
from the weapon mount.
3.8 Maqazine component interface. The following pairs of
items shall assemble and disassemble without the use of tools and
without damage to either components.
Magazine
and
cover
a.
Magazine
and
feedstrap
b.
Magazine and weapon mount
c.
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