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|  MIL-L-45935A
3.3 Performance characteristics.
*
3.3.1 Pressure resistance and functioning. Launchers shall with-
stand the firing of one (1) Government standard 40mm cartridge, M387E4
or equivalent for pressure resistance and functioning. The launcher
shall function without malfunction or unserviceable parts. There shall
be no evidence of blown primer or primer puncture during firing. Test-
ing shall be as specified in 4.5.3.4.
*
3.3.2 Endurance. Launchers shall withstand the firing of 1,000
rounds using cartridge 40MM, XM387E4 or equivalent without malfunctions
or unserviceable parts. Launchers shall be cleaned and oiled with lub-
ricant conforming to MIL-L-46000 after each 250 rounds fired and at the
close of day's firing. Testing shall be as specified in 4.5.3.6.
*
3.3.3 Targeting and accuracy. The launcher shall be assembled to
an M16 or M16A1 rifle and fired at a 200 meter range distance for tar-
geting and accuracy, using Government standard 40mm, M387E4 cartridges
or equivalent. The top edge of the front sight post flange of the rifle
shall be set flush with or not more than .030 inches below the bottom
surface of the front sight slot, and the leaf sight shall be unfolded
to the sighting position. No adjustment of the leaf sight shall be made
after it has been set in the leaf sight alinement. Testing shall be as
specified in 4.5.3.7.
*
3.3.3.1 Targeting. At a 200 meter range distance, the center of impact
of a 20 round group shall be within a targeting rectangle of 36.6 meters (120.08
feet) in range, and 6.38 meters (20.93 feet) in deflection with the 200 meter
aiming point as the center.
*
3.3.3.2 Accuracy. The launcher when assembled to an M16 or M16A1
rifle and fired at a 200 meter range distance, a 20 round group shall have
one range probable error of less than 4.3 meters (14 feet) and one de-
flection probable error of less than 0.9 meters (3 feet). The probable
error shall be calculated by multiplying the range and deflection standard
deviations by 0.674.
*
3.4 Interchangeability. Unless otherwise indicated on the drawings,
all parts shall be interchangeable. Testing shall be as specified in 4.5.3.8-
3.5 Reliability. The launchers shall have a minimum acceptable Mean
Rounds Between Failure (MRBF) of 1333 ROUNDS demonstrated at a 80% confidence
level. Desired MRBF is 4000 rounds. Launchers which meet endurance require-
ment specified in Para. 3.3.2 shall be considered to have met this reliability
requirement. Testing shall be as specified in Para. 4.6.
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