Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Weapons 2 > M4/M16 Rifle > Flashcards

M4/M16 Rifle Flashcards

Know M4/M16 Rifle Parts

1
Q

Universal Weapon Safety Rule #1

A

Treat every weapon as if it were loaded.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Universal Weapon Safety Rule #2

A

Never point a weapon at anything you do not intend to shoot.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Universal Weapon Safety Rule #3

A

Keep your finger straight and off the trigger until ready to fire.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Universal Weapon Safety Rule #4

A

Keep weapon on safe until you intend to fire.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is lightweight, air-cooled, gas-operated, magazine fed, shoulder-fired, designed for both auto and semi-auto?

A

M4/M16

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

M16/M4 Caliber

A

5.56mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

M16/M4 Mechanism Type

A

Gas-operated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

M16/M4 Magazine Type

A

Double-stacked box

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

M16/M4 Ammo Capacity

A

Two magazines - 20 or 30 rounds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

M16 Weight

A

7.4 pounds (3.4 kilograms)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

M4 Weight

A

6.4 pounds (2.9 kilograms)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

M16 Length

A

40 inches (1,125 mm)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

M4 Length

A 
33 inches (838 mm) - Buttstock open
29.75 inches (756 mm) - Buttstock closed
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

M16 Barrel Length

A

21 inches (533 mm)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

M4 Barrel Length

A

14.5 inches (368 mm)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

M16 Muzzle Velocity

A

3,100 fps (945 mps)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

M4 Muzzle Velocity

A

2,970 fps (905 mps)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

M16 Max. Effective Range

A

601 yards (550 meters)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

M4 Max. Effective Range

A

547 yards (500 meters)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

M16/M4 Max. Range

A

3,937 yards (3,600 meters)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

M16/M4 Rate of Fire

A 
Automatic = 90 RPM
Semi = 45 RPM
Sustained = 12-15 RPM
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

M16/M4 Major Components

A
  • Upper Receiver Assembly
  • Lower Receiver Assembly
  • Bolt & Bolt Carrier Assembly
  • Magazine Group Assembly
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Upper receiver assembly part that contains heat-resisting inner shields.

A

Hand Guard

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Upper receiver assembly part that is adjustable for setting elevation.

A

Front Sight Assembly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Upper receiver assembly part that chambers cartridge for firing and directing projectile.

A

Barrel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Upper receiver assembly part that prevents muzzle rise during firing.

A

Compensator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Upper receiver assembly part that secures the bayonet.

A

Bayonet Stud

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Upper receiver assembly part that is located forward of hand guard and below front sights.

A

Upper Level Swivel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Upper receiver assembly part that retains the hand guard.

A

Slip Ring

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Upper receiver assembly part where cartridge casing exits; located on right side.

A

Ejection Port

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Upper receiver assembly part that prevents matter from entering chamber.

A

Ejection Port Cover

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Upper receiver assembly part that ensures bolt is forward after charging.

A

Forward Assist Assembly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Upper receiver assembly part that cocks the weapon.

A

Charging Handle

34
Q

Upper receiver assembly part that is used to add equipment such as optics, etc.

A

Carrying Handle

35
Q

Upper receiver assembly part that has windage knob and elevation knob; and zeroes rifle.

A

Rear Sight Assembly

36
Q

Lower receiver assembly part that contains buffer assembly, provides firing control, and storage of cleaning gear.

37
Q

Lower receiver assembly part that is attached to the buttstock.

A

Lower Level Swivel

38
Q

Lower receiver assembly part that you hold; maintain control of weapon.

A

Pistol Grip

39
Q

Lower receiver assembly part that fires the weapon when pulled.

40
Q

Lower receiver assembly part that protects the trigger; can be opened by pressing plunger.

A

Trigger Guard

41
Q

Lower receiver assembly part that retains and locks magazine in well and allows release.

A

Magazine Catch

42
Q

Lower receiver assembly part that disassembles weapon.

A

Takedown Pin

43
Q

Lower receiver assembly part that allows to separate upper and lower assembly.

A

Receiver Pivot Pin

44
Q

Lower receiver assembly part that selects mode of fire and safety.

A

Selector Lever

45
Q

Lower receiver assembly part that holds bolt to the rear as last round is fired; can manually lock.

A

Bolt Catch

46
Q

Bolt & bolt carrier assembly part that houses bolt assembly and its components

A

Bolt Carrier

47
Q

Bolt and bolt carrier assembly part that features locking lugs; lugs on barrel extension engage bolt lugs and lock bolt firmly in barrel extension with or without cartridge chambered.

48
Q

Can you interchange bolts between rifles?

49
Q

Bolt and bolt carrier assembly part that retains the bolt in bolt carrier and allows movement of the bolt.

50
Q

Bolt and bolt carrier assembly part that strikes cartridge primer causing firing.

A

Firing Pin

51
Q

Bolt and bolt carrier assembly part that retains firing pin in bolt/bolt carrier.

A

Firing Pin Retaining Pin

52
Q

Bolt and bolt carrier assembly part that extracts expended cartridge.

A

Extractor & Extractor Spring

53
Q

Bolt and bolt carrier assembly part that throws cartridge case out.

A

Ejector & Ejector Spring

54
Q

What are the 4 parts of the magazine assembly?

A

(1) Magazine Tube; (2) Follower; (3) Spring; (4) Base

55
Q

Which cycle of operation is the expansion of action spring, sending buffer assembly and bolt carrier group forward with force to strip round from magazine?

56
Q

Which cycle of operation is the pushing of a round into chamber by bolt?

A

Chambering

57
Q

Which cycle of operation is the alignment of locking lugs on bolt with lugs on barrel extension?

58
Q

Which cycle of operation is the ignition of propellant which forces projectile out of barrel?

59
Q

Which cycle of operation is the rotation of bolt until locking lugs no longer align?

60
Q

Which cycle of operation is the withdrawal of cartridge case from chamber by extractor?

A

Extracting

61
Q

Which cycle of operation is the expulsion of cartridge case by ejector and spring?

62
Q

Which cycle of operation is the rearward movement of bolt carrier that overrides hammer, forcing hammer down into receiver and compressing hammer spring, locking it into firing position?

63
Q

Weapon Condition #1

A

Safety on, magazine inserted, round in chamber, bolt forward.

64
Q

Weapon Condition #3

A

Safety on, magazine inserted, chamber empty, bolt forward.

65
Q

Weapon Condition #4

A

Safety on, magazine removed, chamber empty, bolt forward.

66
Q

Which rifle transport is used when no immediate threat is present and enemy contact is unlikely?

A

Strong Side Sling Arms (Muzzle Up)

67
Q

Which rifle transport is used when no immediate threat is present and enemy contact is unlikely - but weather is inclement and used to keep moisture out?

A

Weak Side Sling Arms (Muzzle Down)

68
Q

Which rifle transport is used when both hands are required for work?

A

Cross Body Sling Arms (Muzzle Down)

69
Q

Which rifle carry is used when there is no immediate threat present; permits control of rifle when moving and same time allowing quick engagement of enemy?
(Buttstock hip level, muzzle pointed up at 45 degree angle)

70
Q

Which rifle carry is used when enemy contact is likely; used for moving in close quarters and/or terrain? (Buttstock in shoulder, muzzle pointed up at 45 degree angle)

71
Q

Which rifle carry is used when enemy contact is imminent; allows immediate target engagement, but very tiring to maintain over time. (Muzzle held level)

72
Q

Malfunction

A

Failure of rifle to fire satisfactorily or perform as designed.

73
Q

Stoppage

A

Unintentional interruption in cycle of operation.

74
Q

“SPORTS” Procedures

A

Slap, Pull, Observe, Release, Tap, Shoot

75
Q

Audible-Pop/Reduced-Recoil

A

When only a portion of propellant is ignited; identifiable by reduced recoil and lower report.

  • Sometimes accompanied by excessive smoke
  • Wait min. of 3 seconds before checking for obstruction.
76
Q

Typical Shooter-Induced Stoppages

A

> Failing to make ready.
Bolt not fully seated forward.
Failing to take rifle off safe before attempting to fire.
Failing to properly seat magazine.
Failing to reset trigger.
Failing to recognize rifle has run dry, causing bolt to lock to the rear.

77
Q

Rifle Butt Placement

A

Placed firmly in pocket formed in firing shoulder provides resistance to recoil, helps stabilize the rifle, and prevents rifle from slipping in shoulder while firing.

78
Q

Stock-to-Cheek Weld

A

used to locate same “spot” on the stock so your eye has a constant relationship to rear sight aperture. Cheek pressed firmly against stock. Nose close to charging handle so eye is about 2 inches from rear sight aperture.

79
Q

Eye Relief

A

distance between aperture and aiming eye. Normal eye relief is 2 to 6 inches from aperture.

80
Q

Follow Through

A

Once the weapon is fired, you must continue to focus and concentrate on applying all shooting fundamentals through recoil.

81
Q

Hasty Sling

A

used in all firing positions to steady the rifle but also minimizes the effects of recoil allowing you to quickly recover sight alignment and sight picture after firing.

Weapons 2 (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions