IBOLC UPDATED EXAM SCRIPT QUESTIONS AND ANSWERS
GRADED A+
✔✔M2/M1A2 - ✔✔FM 3-22.65
.50- caliber recoil-operated heavy machine gun
128 lbs (gun, barrel, tripod)
156 cm
✔✔M2 ROF - ✔✔Sustained: 40 RPM, 6-9 rounds 10-15 sec, barrel change at end of
day or if damaged
Rapid: 40 RPM, 6-9 rounds, 5-10 sec --
Cyclic: 450-550 RPM in continuous burst
✔✔M2 Max ranges - ✔✔6764m
Point 1500m
Area: 1830m
Grazing: 700m
✔✔MK 19 - ✔✔FM 3-22.27
40 mm air-cooled, blowback-operated, automatic grenade launcher
140.6 lbs (Gun with barrel and tripod)
109.5 cm
✔✔MK 19 ROF - ✔✔Sustained 40 RPM
Rapid 60 RPM
Cyclic 325-375 in continuous burst
✔✔MK 19 Ranges - ✔✔Point 1,500m
Area 2,212m
Max 2212
✔✔What does the M249 provide the assault? - ✔✔provides the rifle squad with a light
automatic weapon for employment during assault
✔✔When can the M249 be used as a heavy machine gun? - ✔✔In defensive missions
or support by fire
✔✔Types of Ammo for M249 - ✔✔Ball, M855 - 3600m for light materials and personel
Tracer M 856, 3600m--observation, signal, adjustment of fire and incendiary effects
Ball M193, accuracy degraded
M 196 Tracer, accuracy degraded
✔✔How many m240 crews are in weapons squad? - ✔✔there are 2
, ✔✔How does the PL employ M240B? - ✔✔To provide long range, accurate, sustained
fires, against dismounted Infantry, apertures, in fortifications, buildings, and lightly-
armored vehicles. The M240B also provides a high volume of short-range fire is self-
defense against aircraft.
✔✔M240B Ammo - ✔✔M80--For use against light materiel and personnel
M61-- for use against lightly-armored targets
M62-- Tracer, Observation of fire, incendiary effects, signaling and training, usually
mixed with ball. Tracer burnout = 900m
✔✔MK 19 Ammuntion - ✔✔M430 -- penetrates 2 inch armor, 15m casualty radius
M383 15m casualty radius, not armor peircing
✔✔Effective beaten zone - ✔✔where 85% of rounds fall in the beaten zone (elliptical
pattern formed by the cone of fire)
✔✔Effect of range on the beaten zone - ✔✔Increased range= shorter and wider
Range decreases= beaten zone longer and narrower
✔✔Danger Space - ✔✔This is the space between the muzzle and the taret there the
trajectory does not rise above 1.8 meters
✔✔Grazing fire - ✔✔The center of the cone of fire does not rise more than one meter off
the ground
✔✔Plunging fire - ✔✔There is little to no danger space from the muzzle of the weapon
to the beaten zone.
✔✔Classifications of automatic weapons fire - ✔✔With respect to the Ground, Target,
and weapon
✔✔With respect to the Ground - ✔✔Plunging
Grazing
✔✔TO the target - ✔✔enfilade, frontal, flanking, oblique
✔✔Enfilade Fire - ✔✔the long axis of the beaten zone coincides or nearly coincides
with the long axis of the target
✔✔Frontal Fire - ✔✔The long axis of the beaten zone is at a right angle with the front of
the target
✔✔Flanking Fire - ✔✔delivered directly against the flank of the target.
GRADED A+
✔✔M2/M1A2 - ✔✔FM 3-22.65
.50- caliber recoil-operated heavy machine gun
128 lbs (gun, barrel, tripod)
156 cm
✔✔M2 ROF - ✔✔Sustained: 40 RPM, 6-9 rounds 10-15 sec, barrel change at end of
day or if damaged
Rapid: 40 RPM, 6-9 rounds, 5-10 sec --
Cyclic: 450-550 RPM in continuous burst
✔✔M2 Max ranges - ✔✔6764m
Point 1500m
Area: 1830m
Grazing: 700m
✔✔MK 19 - ✔✔FM 3-22.27
40 mm air-cooled, blowback-operated, automatic grenade launcher
140.6 lbs (Gun with barrel and tripod)
109.5 cm
✔✔MK 19 ROF - ✔✔Sustained 40 RPM
Rapid 60 RPM
Cyclic 325-375 in continuous burst
✔✔MK 19 Ranges - ✔✔Point 1,500m
Area 2,212m
Max 2212
✔✔What does the M249 provide the assault? - ✔✔provides the rifle squad with a light
automatic weapon for employment during assault
✔✔When can the M249 be used as a heavy machine gun? - ✔✔In defensive missions
or support by fire
✔✔Types of Ammo for M249 - ✔✔Ball, M855 - 3600m for light materials and personel
Tracer M 856, 3600m--observation, signal, adjustment of fire and incendiary effects
Ball M193, accuracy degraded
M 196 Tracer, accuracy degraded
✔✔How many m240 crews are in weapons squad? - ✔✔there are 2
, ✔✔How does the PL employ M240B? - ✔✔To provide long range, accurate, sustained
fires, against dismounted Infantry, apertures, in fortifications, buildings, and lightly-
armored vehicles. The M240B also provides a high volume of short-range fire is self-
defense against aircraft.
✔✔M240B Ammo - ✔✔M80--For use against light materiel and personnel
M61-- for use against lightly-armored targets
M62-- Tracer, Observation of fire, incendiary effects, signaling and training, usually
mixed with ball. Tracer burnout = 900m
✔✔MK 19 Ammuntion - ✔✔M430 -- penetrates 2 inch armor, 15m casualty radius
M383 15m casualty radius, not armor peircing
✔✔Effective beaten zone - ✔✔where 85% of rounds fall in the beaten zone (elliptical
pattern formed by the cone of fire)
✔✔Effect of range on the beaten zone - ✔✔Increased range= shorter and wider
Range decreases= beaten zone longer and narrower
✔✔Danger Space - ✔✔This is the space between the muzzle and the taret there the
trajectory does not rise above 1.8 meters
✔✔Grazing fire - ✔✔The center of the cone of fire does not rise more than one meter off
the ground
✔✔Plunging fire - ✔✔There is little to no danger space from the muzzle of the weapon
to the beaten zone.
✔✔Classifications of automatic weapons fire - ✔✔With respect to the Ground, Target,
and weapon
✔✔With respect to the Ground - ✔✔Plunging
Grazing
✔✔TO the target - ✔✔enfilade, frontal, flanking, oblique
✔✔Enfilade Fire - ✔✔the long axis of the beaten zone coincides or nearly coincides
with the long axis of the target
✔✔Frontal Fire - ✔✔The long axis of the beaten zone is at a right angle with the front of
the target
✔✔Flanking Fire - ✔✔delivered directly against the flank of the target.
