Operator's Manual - Long Range Sniper Rifle (LRSR) Caliber .50 M107 (2004) - TM 9-1005-239-10.pdf

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OPERATOR'S MANUAL
LONG RANGE SNIPER RIFLE (LRSR),
CALIBER .50, M107 (NSN 1005-01-469-2133)
DISTRIBUTION STATEMENT A – Approved for Public Release; Distribution
is Unlimited. Distributed by CHQSoftware.com
HEADQUARTERS, DEPARTMENT OF THE ARMY
MAY 2004
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TM 9-1005-239-10
This weapon generates harmful levels of noise when firing! Hearing protection must be
worn when firing this weapon.
Treat every firearm as if it were loaded. Never accept or take over a firearm from another
until you yourself have checked personally to see that it is unloaded or in a completely safe
condition.
Always control the muzzle of the firearm, keeping it pointed in a safe direction. With the
M107 rifle, there is some danger in standing to the side of the muzzle due to blow by of hot,
expanding gasses from the muzzle brake. Never point or aim any firearm at anything you
are not willing to shoot!
Buffer and Buffer Spring are under heavy spring tension. Use caution when removing.
The bolt does NOT automatically remain to the rear when the rifle or magazine is empty.
After the rifle is unloaded, and with the charging handle to the rear, always physically
check the chamber to make certain the rifle is empty to preclude injury from accidental
discharge.
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TM 9-1005-239-10
WARNING SUMMARY - Continued
If the spring-loaded cam is lifted too far during disassembly, the spring may lose tension. If
this occurs, the weapon could malfunction, or fire when unlocked, with the potential for
serious injury.
When disassembling spring loaded parts, point components away from face/eyes to avoid
possible injury if parts fly free.
The .50 caliber saboted light armor penetrator (slap) round is specifically prohibited from
being fired in the M107. Forcing it to chamber and fire may cause serious injury to
personnel and damage to the rifle.
Ammunition that predates 1965 should not be fired through this weapon.
Rifle must NOT be fired without both the midlock and rear lock pins firmly in place. Serious
injury or death may result.
Ensure that the weapon is unloaded and on ‘SAFE’ before performing any functional
procedures.
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TM 9-1005-239-10
WARNING SUMMARY - Continued
Never try to force a cartridge to chamber. If the bolt does not fully close, remove the
magazine, clear the weapon, and check for obstructions, but do NOT attempt to fire. Serious
injury or damage to the weapon may result.
This rifle must not be fired without the muzzle brake firmly in place on the barrel because
the action can thus be overstressed, and critical parts breakage can occur.
CAUTION SUMMARY
Be sure the hook and bar are properly mated, or the rifle can be damaged by final assembly
motion.
Double hearing protection should be worn when firing, since harmful levels of noise are
generated.
Whenever inserting cleaning rods or other devices through the muzzle end of the barrel, be
especially careful NOT to damage the muzzle’s crown, since it could affect the accuracy of
the rifle.
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