Weapon Fundamentals Flashcards
options for marine corp Service rifle
M16A4
M4 carbine equipped with a rifle combat optic
6 ways to describe a Marine Corp Service rifle
lightweight
5.56mm
magazine fed
gas operate
air5 cooled
shoulder fired rifle
mm caliber of the Marine Corp Service rifle
5.56mm
what feeds the Marine Corp Service rifle
magazine fed
how is a Marine Corp Service rifle operated
gas-operated
how are Marine Corp rifles cooled
air-cooled
2 ways to fire the Marine Corp Service rifle
semi-automatic (single shot)
burst (3 routn burst)
maximum effective range of M264A
maximum effective range of 550 meters
maximum effective range of the M4 carabine
550 meters
what helps reduce the overall weight of the Marine Corp Service rifle
alumbium receiver
RCO
rifle combat optic
purpose of the ejection port on the Marine Corp Service rifle
prevents dirt and sand from getting in through the ejection port.
normal state of the ejection port of a firearm
keep closed to keep sand/dirt from getting in
what is on the Marine Corp Service rifle trigger guard
spring-loaded retaining pin that, when depressed, allows the trigger guard to be rotated out of the way for access to the trigger while wearing cold weather clothes
when does the ejection port of the Marine Corp Service rifle open
automatically by actions of the bold carrier
purpose of the rail system in the Marine Corp Service rifle
rail system protects the gas tyube
composition of the Marine Corp Service rifle bore and chamber
chrome=plated to reduce wear and fouling
8 components of Marine Corp Service rifle
bolt carrier assembly
charging handle assembly
lower receiver
buttstock assembly
magazine
sling
Upper receiver
barrel assembly
role of bolt carrier assembly
stripping
chambering
locking
firing
extration
ejection
role of the carging handle assembly
initial charging of the weapn
what happens when a firearm is charged
role of the hatch latch
hatch latch locks the chargin handle assembly in the foreard position during sustained fire to prevent injury to the operation
role of the magazine
holds cartridges ready for feeding, provides a guide for positioning cartridges for stripping, and provides quick reload capabilities for hte sustained firing
holds a weapon on your person
sling
what chambers a bullet
barrel chambers the cartridge for firing and directs the service rifle
how does a DODI help left handed shooters
ambidesterous selector lever that can be added to the weapon for left handed shooters only
lever to determine how bullets are fired
selector leaver: (safe, semi, burst)
“semi”
one shot fired per trigger pull
one shot fired per trigger pull
semi
prevents a gun from shootin
safe on the selector level
end of exercise
“index”
what does “burst” do
continue to fire its cycle of operation until interrupted from the burst cam (limits to 3)
what stops firing if you are using “burst”
selector level is on burst
burst ca, limits max rounds to three
burst cam
limits # consecutive bullets fired w/1 trigger pull (3)
drop to the ground post shooting
magazine release button
what happens when the charging handle is pulled to the rear
the bolt unlocks from the barrel extension locking lugs,
the bolt carrier group moves to the rear of the recceiver
purpose of the gas deflectort
prevents the gas from blowing into the aiming eye
when does the bolt-carrier group lock to the rear
if the charging handle is pulled to the rear when the lower protion of the bolt catch is depressed, the bolt carrier group locks to the rear
aka RCO
AN/PVQ-31
what is RCO
illuminated teloscopic sight that does not cauneed batterpower
which weapon system is teh AN/PVQ-31B designed for
M4 carabiner
cannot be switched between different weapons systems
types of amunition authorized for use wtih the Service riffle
ball -M855
tracer - M856
dummy - M199
blank -M200
MK-262 (MOds 0 and 1)
MK-318 Mod 0
ball amunition for service rifle
primary amunition for Servie rifle
identified by green tip
front 1/3: solid steel
back 2/3: lead alloy
bullet with green tip
ball (M855)
bullet with bright red tip
tracer
what does a tracer bullet look like
bright red tip
primary uses of tracer bullets
observation firing
incendiary effect
signaling
ratio of tracer bullets to ball bullets
no greater than 1:1
preferred 1 traer round to 4 ball rounds
cartridge used during dry fire
dummy (M199)
six grooves along the side
contains no propellant or primer
primer well is open to prevent damage to the firing pin
how to identify a dummy round
siz grooves along the side of hte ase.
ontains no propellants/primer
primer well is open to prevent damage to the firing pin
identify blank round
case mouth closed with seven petal rosette crimp
no projectile
violet tip
compare dummy rouint to blank
dummy: 6 grooves aroudn the size. primer well is open to prevent damage to the firing pin
blank round: seven petal rosette crimp tip that is violet
study of projectiles and their effects
ballistics
what happens inside a projectile when it is fired
powder burns, chamber pressure builds, projectile is pushed forward through the throat, engaging the rifling
power in the cartridge continues to burn, adding pressure and increasing the velocity of the projectile
bullet rotation
as the round travels down the barrel, it is rotated by the rifling cut into the barrel
-the rotation stabilizes the round once it exits the barrell
***longer heavier rounds needmore spin than lighter shorter
what happens if a round is over-stabilized (rotated as it leaves
the projectile will perform poorly when it impacts body tissue, puncching ystraight through with minimal disturbance of hte trissue
what happens if a bullet’s rotation is under stabilized
it will not travel accurately and will be heavility affected by the atmospheric conditions and drag
Rule 1
“treat every weapon as it it were loaded”
Rule 2
Never point a weapon at anything you do not intend to shoot
Rule 3
Keep your finger straight and off the trigger until you are ready to fire
Rule 4
Keep the weapon on SAFE until you intend to fire
Rule 1 & 2
- treat every weapon as if it were loaded
- never pojnt a weapon at anything you do not intend to shoot
Rule 3 & 4
- keep your finger straight and off the trigger until you are ready to fire
- keep the weapon on SAFE until you intend to fire
Rule 2 & 3
- Never point a weapon at anything you do not intend to shoot
- keep your finger straight and off the trigger until you are ready to fire
describes a weapon’s readiness
a weapon’s readiness is described by conditions
steps involved in loading/unloading a gun
the steps involved in loading/unloading a gun takes the Service rifle through specific conditions fo readiness for live fire
condition 1
safety on
magazine inserted
round in chamber
bolt forward
ejection port cover closed
condition 2
not applicable in the Service rifle
condition 3
safety on
magzine inserted
chamber empty
bolt forward
ejection port closed
condition 4
safety on
magazine removed
chamber empty
bolt foreard
ejejction port cover closed
safety in condition 1
safety on
magazine in condition 1
magazine inserted
round in condition 1
round in chamber
ejection port in condition 1
ejection port closed
safety in all conditions
safety on
how do you determine a weapon’s readiness?
its condition
what must happen when you take control of a weapon
its condition must be determined and known
3 steps to determine the condition of a weapon
-determine if the magazine is present
- ensure the weapon is on SAFE
- conduct a chamber check
firs rule of weapon safety
Rule 1: treat every weapon as if it were loaded
second rule of weapon safety
Rule 2: never point a weapon at anything you do not intend to shoot
treat every weapon as if it were loaded
Rule 1 of weapon safety
never point a weapon at anything you do not intend to shoot
rule 2 of weapon safety
command to stop shooting
CEASE FIRE
command where someone has to show the weapon is not loaded
SHOW CLEAR
CLP
cleaner, lubricant, and preservative
lubricant used for service rifle
CLP: cleaner, lubricant, and preservative
*only not used in cold Arctic condtions
4 tools to clean a weapon
CLP
rod
brutches
patch holder
what happens in double-action mode
causes the hammer to move to the rear as the trigger is being pulled
3 major components of the M9
slide assembly
barrell assembly
receiver
maximum effective range of the M9
50 yards (54.7 yds)
how many rounds does the magazine of teh M9 service pistol hold
15 round
what happens when the last round of the M9 service pistol is fired
the slid automatically locks to the rear
balls used by the M9 service pistol
9mm
8 steps of firingthe M9 service pistol
firing
unlocking
extracting
ejecting
cocking
feeding
chambering
lociking
what does a dummy round look like
hold erilled into the side and contains no primer
strip used to keep a pistol on your person
laynard
why should you never apply oil or grease to M9 amunition
oil can produce excess chamber pressure or damage operating parts/
6 commands when firing a M9 service pistol
Load
Make REady
Fire
Cease FIre
UNload
Unload, show clear
2 methods for checking the condition of a M9 service pistol
checking the round indicator on the right side of hte pistol
conducint a chamber check
what condition is a weapon in during the “LOAD” command when firing M9
take weapon from condition 4 to 3
what condition do you put a M9 service pistol in when you “Unload”
put into condition 4
stoppage
unintentional interruption in teh cycle of operation
unintentional interruption in the cycle of operation of a M9 service pistol
stoppage
when do you discover a stoppage
when a M9 service pistol won’t fire
how can you prevent M9 stoppages
proper care, cleaning, lubrication, shooter error
purpose of knife fighting
cause massive trauma and damage to an aggressor by exeucting the verticle thrust or verticle slash techniques
goal of knife fighting
attack soft body vital targets that are readily accessible
weight of a M67 fragmentation grenade
14 ounces
killing radius of a M67 fragmentation hand grenade
5 meters
effective casualty-producing radius of a M67 fragmentation hand grenade
15 meters
danger zone of a M67 fragmentation grenade
effective casualty-producing radius = 15 meters
killing radius = 5 meters
how to remove the pin of a M67 fragmentation grenade
pull ring with index/middle finger of the nonthrowing hand
remove the safety pin with a pulling and twisting motion
HIMARS
high mobility artillerary rocket system
MLRS
multiple launch rocket system
FMTV
family of medium tactical vehicles
weight of HIMARS
24,000 lbs
maximum range of HIMARS
45 miles
maximum rate of fire of HIMARS
6 rockets
crew of HIMARS
3 crew
mximum speed of HIMARS
53 mph
difference between a blank and dummy round
A dummy is not to be confused with a blank, a cartridge for a firearm that contains propellant and a primer but no bullet or shot; a dummy does not produce an explosive sound like a blank does.
