| Characteristics | Nomenclature | Immediate and Remedial Action | Maintenance and Ammunition |
|---|---|---|---|
|
2,800 feet per second
What is the muzzle velocity of the M240B?
|
Buttstock Buffer Group
Barrel Group Receiver Group Operating Group Trigger Housing Group
What are the 5 main groups of the M240B?
|
Lock the bolt to the rear, place weapon on safe, allow the barrel to cool, remove ammunition from the feed tray, close the cover and attempt to fire.
If the round fails to fire, clear the weapon by using a cleaning rod (no T handle) with the cover closed, inserting into the muzzle to push the casing out through the chamber.
What is remedial action for a stuck cartridge?
|
CLP, LSA, LSA-T, and LAW
What are the lubricants authorized for field use on the M240B?
|
|
800 meters
What is the maximum effective range (Point Target)?
|
Picture A
(Two correct answers needed) |
200
A hot barrel is classified as how many rounds fired within a 2 minute period?
|
Operating Rod, Bolt, Receiver
Prior to firing, lubricate the gun by placing a light coat of CLP on what three parts?
|
|
Sustained: 100 rounds per minute with a 4 to 5 second pause between bursts and a barrel change every 10 minutes
Rapid: 200 rounds per minute with a 2 to 3 second pause between bursts and a barrel change every 2 minutes Cyclic: 550 to 650 rounds per minute, fired in a continuous burst, with a barrel change every minute
What are the 3 rates of fire?
|
Picture B
(Three correct answers needed) |
Wait 5 seconds after the misfire in case of a hang fire.
Within the next 5 seconds (to guard against cook-off), pull the charging handle to the rear, observe the ejection port, if brass was seen to eject attempt to fire again. If brass did not eject, place the weapon on SAFE, determine if the barrel is hot or cold. Proceed to hot/cold barrel procedures
What is immediate action?
|
2-7 clicks
Before firing checks consist of inspecting, removing excess oil, checking headspace, and lightly lubricate. How many clicks should your headspace be at?
|
|
3,725 meters
What is the maximum range of the M240B?
|
Picture C
(Three correct answers needed) |
Remove the barrel, use the ruptured Cartridge Extractor to remove the remains of the cartridge.
What is remedial action for a ruptured cartridge?
|
Projectile
Cartridge Case Propellant Primer
What are the 4 components of a cartridge?
|
|
The M240B is an air-cooled, belt-fed, gas-operated, crew served, fully automatic weapon that fires from the open-bolt position.
The M240B is an ___-______, belt-fed, ___-________, crew served, fully automatic weapon that fires from the ____-____ position.
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Picture D
(Four correct answers needed) |
1. Gunner pulls the charging handle to the rear to interrupt the cycle of operation by stopping "chambering"
2. Hold the gun on target if fewer than 100 rounds remain. 3. Team Leader breaks ammunition belt only as a last resort only as this may cause damage to the feed mechanism.
What is remedial action for a runaway gun?
|
Ball
Tracer Blank Dummy Armor Piercing
What are the 5 different types of ammunition?
|
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