M240B Machine Gun
A hot gun is 200 rnds fired in ____ minutes ?
two
Shoots what size ammunition and maximum range ?
7.62mm, 3725 meters
What can happen at high temperatures in a barrel that is loaded?
Cook-off
Muzzle velocity ?
3050 fps
.50 cal:
Ammo on feed tray, bolt forward, round in chamber, cover closed?
Condition 1
When the command "load" is given, what action should you take in regards to condition codes?
Take weapon from condition code 4 to 3
The M240B is fired from the _____ _____ position and is an air cooled, _____-fed, gas operated, automatic weapon.
Open Bolt, Belt
Cyclic rate of fire is ____ to ____ rpm, and the muzzle velocity is ______ fps ?
600 to 650, 2800
Max effective range and maximum range ?
Effective 2000 yds, max 7400 yards
Sustained slow rate of fire and cyclic rate of fire ?
Sustained 40 rpm, cyclic 100 rpm.
.50 cal
No ammo present, bolt is forward, no round in chamber, cover closed.
Condition 4
When the command "unload" is given, what action should you take in regards to condition codes ?
Take weapon from condition code 1 to 3 or 4.
What serves as support for all major components?
Receiver assembly
First step during the safety / function check ?
Ensure the safety is in the "fire" position.
When adjusting headspace, what is the maximum number of clicks you can rotate the barrel after the initial setting of two clicks ?
Five
Overall weight
84 lbs
Describe condition code 2 on an M240B ?
Does not apply
In regard to the Deadly Force Triangle, which is the hardest to determine?
Intent
What moves in a guide rail on the right side of the receiver ?
Cocking handle assembly
In a hot gun situation, how long must the barrel cool for?
15 minutes
While checking for headspace, where is the gauge placed?
T-slot
What should you do if you notice your receiver is broken?
Bring it to the armorer for maintenance.
.50 cal
Ammo on feed tray, bolt forward, no round in chamber, cover closed?
Condition 3
Define a "stoppage" ?
Any interruption in the cycle of operation caused by faulty action of weapon or faulty ammunition.
What provides energy for returning the bolt and operating rod to the firing position ?
Drive spring rod assembly
What component is responsible for feeding, stripping, chambering, firing, extracting, and ejecting cartridges ?
Operating rod assembly
Purpose of the bolt stud ?
Provides a means to move the bolt to the rear with retracting of the charging handle.
Headspace gauge is used to check the distance between what two components ?
Face of the bolt and rear of the barrel.
Before loading drill ammunition, what condition code does the .50 caliber need to be in?
Condition 4
Correct order of the 8 steps in the firing cycle ?
Feeding, Chambering, Locking, Firing, Unlocking, Extracting, Ejecting, Cocking