Bushmaster M4A3 Flashcards
Bushmaster M4A3 safety precautions
1 Identify a safe direction
2 Finger outside the trigger guard. Aim the rifle in that safe direction
3 Set the safety selector lever to “Safe”
4 Remove magazine (if fitted) and physically check the magazine well
5 Lock the bolt carrier assembly to the rear and return the charging handle to the forward position
6 Remove the chamber safety device (if fitted)
7 Carry out two visual and physical checks of the chamber and the magazine well
8 Strike the bolt catch releasing the bolt carrier assembly forward
9 Close the ejection port cover
Bushmaster M4A3 pre op checks
1 Upper receiver
- compensator / suppressor security / blockage
- sighting system secure and functioning / aimpoint brightness control
- lighting systems secure and functioning
- hand guards secure
2 Lower receiver
- pistol grip (secure)
- visual check for damage
- pivot pin / takedown pin fully located
3 Telestock
- retractable stock function
- magazine carrier secure
- sling secure
4 Magazine
- floor plates secure and the magazines undamaged
- check the number, type and alignment of ammunition
Bushmaster M4A3 load
1 Identify a safe direction
2 Finger outside the trigger guard. Aim the rifle in that safe direction
3 Check the safety selector lever is set to “Safe”
4 First magazine - place the magazine into the magazine carrier
5 Second magazine - insert the magazine into the rifle and tug on the base to ensure it is fully seated
Bushmaster M4A3 action
1 Identify a safe direction
2 Finger outside the trigger guard. Aim the rifle in that safe direction
3 Check the safety selector lever is set to “Safe”
4 Rack the charging handle to chamber a round
5 Pull charging handle part way to rear , look into breach, confirm round is
chambered (press check)
6 Release charging handle
7 Strike the forward assist plunger
Teaching point: The press check can be carried out at any time to check a round is
chambered.
Bushmaster M4A3 instant
1 Ensure finger is outside the trigger guard
2 Set the safety selector lever to “Fire”
Teaching point: The rifle should not be moved to the “instant” state until on target
and a decision has been made to fire
Bushmaster M4A3 immediate action drill (first failure to fire)
1 Finger off the trigger and placed outside the trigger guard
2 Check the safety selector lever is set to “Fire”
3 Tap the base of the magazine
4 Roll the rifle to the right
5 Work the charging handle and chamber a round
6 Strike the forward assist plunger
7 Finger outside the trigger guard; Re-assess
Teaching point: The officer may chose to immediately transition to a secondary weapon as an alternative to attempting the stoppage drill.
Bushmaster M4A3 stoppage drill (second failure to fire)
1 Finger off the trigger and placed outside the trigger guard
2 Tilt and observe the breach to determine the cause of the obstruction
3 Lock the bolt carrier to the rear and return the charging handle to the forward
position
4 Rip the magazine off the weapon
5 Clear the upper receiver of the obstruction (either physically or visually as
required)
6 Reload with a new magazine. Tap and tug to ensure seated
7 Strike the bolt catch to chamber a fresh round
8 Strike the forward assist plunger
9 Finger outside the trigger guard; Re-assess
Teaching point: The officer may chose to immediately transition to a secondary
weapon as an alternative to attempting the stoppage drill.
Bushmaster M4A3 return to the action state
1 Identify a safe direction
2 Finger outside the trigger guard. Aim the rifle in that safe direction
3 Set the safety selector lever to “Safe”
4 Close the ejection port cover
Bushmaster M4A3 unload
1 Identify a safe direction
2 Finger outside the trigger guard. Aim the rifle in that safe direction
3 Check the safety selector lever is set to “Safe”
4 Remove the magazine and physically check the magazine well
5 Roll the weapon to the right
6 Lock the bolt carrier to the rear, ejecting any rounds, and return the charging
handle to the forward position
7 Carry out two visual and physical checks of the chamber and the magazine
well
8 Insert a chamber safety device (if applicable)
9 Release the bolt carrier assembly forward
Teaching point: ease the bolt carrier assembly forward if a chamber safety device
is inserted.
10 Return / secure magazines and ammunition
Bushmaster M4A3 post op checks
1 Upper receiver
- compensator / suppressor security / blockage
- sighting system secure and functioning / aimpoint brightness control
- lighting systems secure and functioning
- hand guards secure
2 Lower receiver
- pistol grip (secure)
- visual check for damage
- pivot pin / takedown pin fully located
3 Telestock
- retractable stock function
- magazine carrier secure
- sling secure
4 Magazine
- floor plates secure and the magazines undamaged
- check the number, type and alignment of ammunition
Bushmaster M4A3 Serviceability
check
Only required after
cleaning and
maintenance
This is best carried
out by suitably
qualified or
competent person
1 Field strip the weapon
2 Bolt carrier assembly
a. visually inspect for proper assembly, damaged or missing parts
b. confirm that serial numbers of bolt, bolt carrier and receiver match
3 Barrel
a. bore for any obstructions or obvious faults / damage
b. hand guards for security
c. compensator for security
d. foresight block and blade for security
4 Reassemble rifle
5 Upper receiver
a. visual check for obvious damage
b. charging handle latch
6 Lower receiver
a. pivot pin, take-down pin and selector
b. pistol grip for security
c. visual check for obvious damage to receiver
d. telestock for obvious damage and function
e. sling and sling points (if fitted)
7 Lights
a. if fitted, check security and serviceability
8 Magazines
a. floor plate is secure, the follower is located and the magazine is
undamaged
Bushmaster M4A3 Function test
This is carried out
after cleaning and
maintenance
This is best carried
out by a competent
person
1 Identify a safe direction
2 Finger outside the trigger guard. Aim the rifle in that safe direction
3 Check the safety selector lever is set to “Safe”
4 Attempt to operate the trigger. Hammer should not fall
5 Set the safety selector lever to “Fire”
6 Operate the trigger and hold to the rear. Hammer should fall
7 Work the charging handle and attain trigger reset
8 Set the safety selector lever to “Safe”
9 Fit an empty magazine to the rifle
10 Work the charging handle and return the charging handle to the forward position (the bolt carrier assembly should remain locked to the rear)
11 Remove the magazine, release the bolt carrier assembly forward, close the
ejection port cover
