M240B TC 3-22.240 Flashcards
29 Questions
103 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the weight of the M240B?

27.1 pounds

What Field Manual covers the M240B?

TC 3-22.240

Describe the M240B.

The M240B is a gas-operated, belt-fed, air-cooled, fully automatic weapon that fires from the open-bolt position.

What is the sustained rate of fire for the M240B?

<p>100 rounds per minute</p> Signup and view all the answers

What is the rapid rate of fire for the M240B?

<p>200 rounds per minute</p> Signup and view all the answers

What is the cyclic rate of fire for the M240B?

<p>650 to 950 rounds per minute</p> Signup and view all the answers

What is the maximum range of the M240B?

<p>3725 meters</p> Signup and view all the answers

What is the maximum effective area of the M240B with tripod?

<p>1800 meters</p> Signup and view all the answers

What is the maximum effective range of the M240B for a point target?

<p>800 meters</p> Signup and view all the answers

What is the tracer burnout for the M240B?

<p>900 meters</p> Signup and view all the answers

What types of ammunition can be used with the M240B? (Select all that apply)

<p>M63 - Dummy (A), M61 - Armor Piercing (B), M80 - Ball (C), M62 - Tracer (D), M82 - Blank (E)</p> Signup and view all the answers

What are the proper clearing procedures for the M240B?

<p>Fire position, bolt to rear, place on safe, raise cover assembly, conduct four-point safety check, check feed tray, lift feed tray and inspect chamber.</p> Signup and view all the answers

What are the proper procedures for performing a function check on the M240B?

<p>Place safety on 'F', pull cocking handle to rear, then trigger. Safety on 'S', check. Safety on 'F', pull trigger.</p> Signup and view all the answers

What is the name of the 240's tripod?

<p>M122A1 tripod</p> Signup and view all the answers

What is meant by traversing fire?

<p>Adjusting fire to the left and right while on tripod</p> Signup and view all the answers

What is meant by searching fire?

<p>Adjusting fire up and down while on tripod</p> Signup and view all the answers

What is meant by grazing fire?

<p>When you have a cone of fire that is at no point higher than 1 meter off the ground</p> Signup and view all the answers

What is meant by plunging fire?

<p>When you are firing from high grounds to low grounds</p> Signup and view all the answers

What is meant by oblique fire?

<p>When the long axis of the beaten zone is at an angle other than a right angle to the front of the target</p> Signup and view all the answers

What is meant by enfilade fire?

<p>When the long axis of the beaten zone coincides with the long axis of the target</p> Signup and view all the answers

What are the 8 major groups of the M240?

<p>Barrel assembly, cover assembly, butt stock assembly, receiver assembly, trigger assembly, operating rod assembly, bolt assembly, driving spring rod assembly</p> Signup and view all the answers

What are the 4 rules of firearm safety? (Select all that apply)

<p>Treat every weapon as if it is loaded (A), Keep finger straight and off the trigger until ready to fire (B), Ensure positive identification of the target and its surroundings (C), Never point the weapon at anything you do not intend to destroy (E)</p> Signup and view all the answers

Does the M240B have an Amber Status?

<p>False (B)</p> Signup and view all the answers

Describe the Green status for the M240B.

<p>The bolt is locked forward and the fire/safe selector switch is on fire (F).</p> Signup and view all the answers

Describe the Red status for the M240B.

<p>The machine gun ammunition is loaded onto the feed tray, bolt is open and locked to the rear.</p> Signup and view all the answers

Describe the Black status for the M240B.

<p>The machine gun ammunition is loaded on the feed tray, the bolt is locked to the rear, the selector switch is set to fire.</p> Signup and view all the answers

The phases of the cycle of function in order are: _____

<p>Feeding, Chambering, Locking, Firing, Unlocking, Extracting, Ejecting, Cocking</p> Signup and view all the answers

What are the CYCLE OF FUNCTION?

<p>The mechanical process a weapon follows during operation</p> Signup and view all the answers

What is COOLING?

<p>The process of dissipating heat from the weapon during firing</p> Signup and view all the answers

Flashcards

M240B Weight

27.1 pounds

M240B Field Manual

TC 3-22.240 (April 28, 2017)

M240B Operation

Gas-operated, belt-fed, air-cooled, fully automatic.

Firing Position

Open-bolt

Signup and view all the flashcards

Sustained Rate of Fire

100 rounds per minute; barrel change every 10 minutes.

Signup and view all the flashcards

Rapid Rate of Fire

200 rounds per minute; barrel change every 2 minutes.

Signup and view all the flashcards

Cyclic Rate of Fire

650-950 rounds per minute; barrel change every minute.

Signup and view all the flashcards

Maximum Range

3725 meters

Signup and view all the flashcards

Max Effective Area (Tripod)

1800 meters

Signup and view all the flashcards

Max Effective Point Target

800 meters

Signup and view all the flashcards

Tracer Burnout Distance

900 meters

Signup and view all the flashcards

M240B Ammunition

M80 (Ball), M61 (AP), M62 (Tracer), M63 (Dummy), M82 (Blank).

Signup and view all the flashcards

Clearing Procedure Focus

Ensure weapon is safe before pulling the trigger.

Signup and view all the flashcards

Function Check Focus

Safety, trigger response, bolt functionality.

Signup and view all the flashcards

M240B Tripod

M122A1

Signup and view all the flashcards

Traversing Fire

Adjusting left and right.

Signup and view all the flashcards

Searching Fire

Adjusting up and down.

Signup and view all the flashcards

Grazing Fire

Fire cone stays under 1 meter.

Signup and view all the flashcards

Plunging Fir

Firing from high to low ground.

Signup and view all the flashcards

Oblique Fire

Angled fire relative to the target.

Signup and view all the flashcards

Enfilade Fire

Long axis aligned with the target.

Signup and view all the flashcards

M240B Major Groups

Barrel, Cover, Butt Stock, Receiver, Trigger, Operating Rod, Bolt, Driving Spring Rod.

Signup and view all the flashcards

Firearm Safety Rule #1

Treat every weapon as if it is loaded.

Signup and view all the flashcards

Firearm Safety Rule #2

Never point the weapon at anything you don't intend to destroy.

Signup and view all the flashcards

Firearm Safety Rule #3

Keep your finger off the trigger until ready to fire.

Signup and view all the flashcards

Firearm Safety Rule #4

Ensure positive identification of the target and its surroundings.

Signup and view all the flashcards

M240B Red Status

Ammunition loaded, bolt open/locked, selector on safe.

Signup and view all the flashcards

Cycle of Function

Steps of loading, firing and unloading.

Signup and view all the flashcards

Cooling

Dissipation of heat from the weapon during firing.

Signup and view all the flashcards

Study Notes

M240B Overview

  • Weight of the M240B is 27.1 pounds.
  • Current Field Manual is TC 3-22.240, published on April 28, 2017.

M240B Characteristics

  • Gas-operated, belt-fed, air-cooled, fully automatic weapon.
  • Fires from the open-bolt position and supports optics and equipment through standardized mounting surfaces.

Rates of Fire

  • Sustained rate: 100 rounds per minute in bursts of 6 to 9 rounds; barrel change every 10 minutes.
  • Rapid rate: 200 rounds per minute in bursts of 10 to 13 rounds; barrel change every 2 minutes.
  • Cyclic rate: 650 to 950 rounds per minute in continuous bursts; barrel change every minute.

Ranges and Ammunition

  • Maximum range: 3725 meters.
  • Maximum effective area (with tripod): 1800 meters.
  • Maximum effective range for point target: 800 meters.
  • Tracer burnout distance: 900 meters.
  • Compatible ammunition types: M80 (Ball), M61 (Armor Piercing), M62 (Tracer), M63 (Dummy), M82 (Blank).

Clearing and Function Check Procedures

  • Proper clearing involves placing the weapon in fire position, conducting checks for ammunition, inspecting the chamber and parts, and ensuring the weapon is safe before pulling the trigger.
  • Function check requires ensuring safety positions, testing trigger response, and confirming bolt functionality.

Tripod and Fire Types

  • M240B is mounted on the M122A1 tripod.
  • Fire types include:
    • Traversing fire: adjusting left and right.
    • Searching fire: adjusting up and down.
    • Grazing fire: fire cone stays under 1 meter off the ground.
    • Plunging fire: firing from high to low ground.
    • Oblique fire: angled fire relative to the target.
    • Enfilade fire: long axis of beaten zone aligned with the target.

Major Groups of the M240B

  • The M240B consists of eight major components:
    • Barrel assembly
    • Cover assembly
    • Butt stock assembly
    • Receiver assembly
    • Trigger assembly
    • Operating rod assembly
    • Bolt assembly
    • Driving spring rod assembly

Firearm Safety Rules

  • Treat every weapon as if it is loaded.
  • Never point the weapon at anything you do not intend to destroy.
  • Keep your finger off the trigger until ready to fire.
  • Ensure positive identification of the target and its surroundings.

Status Indicators

  • Amber status: The M240 does not have an amber status.
  • Green status: Bolt locked forward, fire selector on fire, feed tray closed.
  • Red status: Ammunition loaded, bolt open and locked rear, fire selector on safe.
  • Black status: Ammunition loaded, bolt locked rear, selector on fire, finger on trigger ready to engage.

Cycle of Function

  • Phases include feeding, chambering, locking, firing, unlocking, extracting, ejecting, and cocking.
  • Cycle of function describes the mechanical processes during weapon operation.

Cooling

  • Cooling refers to the dissipation of heat from the weapon during firing to maintain operational efficiency.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Description

Test your knowledge on the M240B machine gun with this quiz based on TC 3-22.240. Learn about its weight, field manual, and technical specifications. Perfect for military personnel or defense enthusiasts looking to reinforce their understanding of this weapon system.

More Like This

M240B Specifications Quiz
45 questions

M240B Machine Gun Quiz: Effective Range & Specs

WorthSpruce672 avatar
WorthSpruce672
M240 Machine Gun: Tactics and Characteristics
20 questions

M240 Machine Gun: Tactics and Characteristics

ArtisticMossAgate8664 avatar
ArtisticMossAgate8664
M240 & M2A1 Machine Gun - Tactics & Techniques
13 questions

M240 & M2A1 Machine Gun - Tactics & Techniques

ArtisticMossAgate8664 avatar
ArtisticMossAgate8664
M240 & M2A1 Machine Gun Principles
21 questions

M240 & M2A1 Machine Gun Principles

ArtisticMossAgate8664 avatar
ArtisticMossAgate8664
Use Quizgecko on...
Browser
Open
Browser
Browser