weapons practical study guide Flashcards
1 General safety rule
treat every weapon as if it were loaded
2 General safety Rule
Never a point a weapon at anything you do not intend to shoot
3 General safety rule
Keep your finger straight and off trigger until ready to fire
4 General safety rule
Keep weapon on safe until ready to fire
M2HB condition 1
ammo in feedway, bolt forward,cover closed, round chambered, safety on
M2HB condition 2
not applicable
M2HB condition 3
ammunition on feed way, cover closed, bolt forward, no round chambered, safety on (in applilcable)
M2HB condtion 4
no belt in feed way, top cover closed, bolt forward, no round chambered, safety on
M2HB Characteristics
crew served,recoil operated, air cooled, belt fed, automatic/single shot
M2HB max effective range
2000 yards/1 nautical mile
M2HB max range
7400 yards
M2HB headspace and timing
conducting headspace gauging pull charging handle so there is no gap more than 1/16” between barrel extension and trunion block, barely able to see notches
M2HB headspace tolerance
between 2-7 clicks
Failure to set correct headspace can result in what
catastrophic system failure causing possible injury or death and irreparable damage to equipment
headspace too loose can cause what
explosive energy will follow path of least resistance which will be back through receiver
if headspace is too tight…
round can get seated too far into barrel and become stuck. bolt face can tear the base of brass off bottom and leave remaining casing inside barrel
if weapon fails timing…
notify armorer for adjustment
hot gun is defined as what
200 or more rounds in 2 minutes or less
m240b condition 1
ammo in feed tray, bolt locked to rear, safety on
m240b condition 2
not applicable
m240b condition 3
top cover closed belt on feed tray bolt forward no round chambered safety off
m240b condition 4
no ammo, top cover closed, bolt forward, no round chambered, safety off
m240b characteristics
automatic, air cooled belt fed gas operated, open bolt,
m240b max effective range
point-800m, area 1800m
m240b max range
3725m
m240b headspace
fixed headspace, 2 and 7 clicks guide applies, faint click known as ghost click which isnt counted as 2 to 7 click, if tightened barrel outside 2 to 7 click notify armorer