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Page Title:
Synthetic stock impact resistance |
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|  MIL-R-1296F(AR)
4.5.8 Endurance test. The rifle shall be tested by firing
5,000 rounds of ammunition. Cleaning and lubricating shall be
performed after each 500 rounds and at the end of each day's
firing. In addition, the rifle shall be tested by 500 falls of
the firing pin upon an empty chamber. Lubrication shall be
performed after each 100 snaps. Dry firing and live firing shall
be alternated in cycles of 1,000 rounds followed by 100 snaps.
Upon completion of the endurance test, rifles shall again be
subjected to the trigger pull test and the targeting and accuracy
firing tests specified in 4.5.1, 4.5.6 and 4.5.7.
resistance. One sample of each synthetic or
4.5.9 Chemical
plastic material shall be submerged in each chemical listed in
3.3.7 for 24 hours at ambient temperature. The sample shall be
removed rinsed, dried and visually and manually inspected. No
sample shall display softening, checking, defamation or other
adverse effect.
4.5.10 Synthetic stock impact resistance. Three synthetic
stocks shall be choosen. Each shall be dropped a minimum distance
of four (4) feet in each Of the following fOUr modes: left side
down, right side down, butt down, muzzle end down. The drop
surface shall be a 85 + 5 Durometer (Shore A) rubber mat, one
inch thick, backed by concrete.
PACKAGING
5.
5.1 Preservation.
5.1.1 Level
A.
5.1.1.1 Cleaning. The rifle shall be disassembled as
necessaxy to accomplish the required cleaning. All metallic
surfaces shall be cleaned by process C-3 or C-1 of MIL-P-116.
Nonmetallic surfaces, such as the stock and hand guard shall be
cleaned by process C-1 of MIL-P-116. The internal surfaces of
the trigger mechanism need not be cleaned and relubricated if
they were clean and lubricated during their assembly. However,
if they are not to be cleaned and relubricated as specified
herein, they must be protected to assure that the original
cleaning and lubrication is not compromised during preparation
for delivery.
5.1.1.2 Drying. All surfaces of rifle shall be dried in
accordance with process D-1 of MIL-P-116, except that the barrel
bore and chamber shall be dried by procedure D-4, utilizing
clean, dry and lint-free swabs.
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