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US Weapons

M4 Carbine, M203, M249, M240B, M2

QuestionAnswer
What is the field manual concerning the M4 Rifle? FM 3-22.9
What is the first thing you should do when you handle a weapon? Make sure you clear it
What are the four fundamentals of marksmanship? 1.Steady Position 2.Proper Aim (Sight Picture) 3.Breathing 4.Trigger Squeeze
What are the two basic elements of the Sight Picture? 1.Sight Alignment 2.Placing of the Aiming Point
What does the acronym SPORTS stand for? Slap, Pull, Observe, Release, Tap and Squeeze
What is remedial action? Remedial action is the continuing effort to determine the cause for a stoppage normal function and to try to clear the stoppage once it has been identified.
Describe the proper procedures for applying remedial action with the M4. 1.Try to place the weapon on safe 2.Remove the magazine 3.Lock the bolt to the rear 4.Place the weapon on safe if not already done
Describe the proper procedure for applying immediate action with the M4. LOOK ON PAGE 1
Is SPORTS an Immediate or Remedial Action? Immediate action
What is immediate action? Immediate action involves quickly applying a possible correction to reduce a stoppage without performing troubleshooting procedures to determine the actual cause.(SPORTS)
How many times should immediate action be applied to a weapon? Once. (If Rifle still fails to fire, apply remedial action)
What is a malfunction? The weapon ceasing to fire due to a stoppage resulting from mechanical failure of the weapon, magazine or ammo.
Name the different categories of malfunctions for the M4 Rifle. 1.Failure to feed, chamber or lock 2.Failure to fire cartridge 3.Failure to Extract 4.Failure to Eject
What is stoppage? A stoppage is a failure of an automatic or semiautomatic firearm to complete the cycle of operation.
How do you clear a stoppage? Apply immediate or remedial action
What is the definition of Maximum Effective Range? The greatest distance at which a soldier may be expected to deliver a target hit.
What does CLP stand for? Cleaner - It contains solvents that dissolve firing residue and carbon. Lubricant - It lays down a layer of teflon as it dries to provide lubrication. Preservative - It prevents rust from Forming.
Describe the M4 Rifle. A 5.56 mm, magazine fed, gas-operated, air-cooled, semiautomatic or three-round burst, hand-held, shoulder-fired weapon.
What are the 7 types of ammunition that can be used with the M4 Rifle? M193 – Ball; M196 – Trace; M199 – Dummy; M200 – Blank (Violet tip and 7 petal rose crimp); M855 – Ball (Green Tip); M856 – Tracer (Red Tip); M862 – Short Range Training Ammunition (Plastic with a Blue Tip)
Describe the weights of the M4 Rifle without mgazine and sling, with sling and loaded 20 round magazine and with sling and loaded 30 round magazine. Without Magazine and Sling - 6.49 pounds With Sling and a loaded 20 round magazine - 7.19 pounds With Sling and a loaded 30 round magazine - 7.50 pounds
Describe the max effective rates of fire for the M4 Rifle. Semiautomatic - 45 rounds per minute Burst - 90 rounds per minute Sustained - 12-15 rounds per minute
What is the muzzle velocity of the M4 Rifle? 2,970 feet per second
Describe the ranges for the M4 Rifle. Maximum Range - 3,600 meters Max Effective Range for a Point Target - 500 meters Max Effective Range for an Area Target - 600 meters
Describe the Barrel Rifling for the M4 Rifle. Right hand twist 1/7
What is the basic load of ammunition for the M4? 210 Rounds total. (7 magazines with 30 rounds in each)
The elevation knob adjusts the point of aim for the M4 Rifle how much? 300 to 600 meters
What is the overall length of the M4 Rifle? Buttstock Closed - 29.75 inches Buttstock Open - 33.00 inches
What are the four positions for the buttstock of the M4 Rifle? 1.Closed 2.1/2 Open 3.3/4 Open 4.Full Open
What are the 8 steps in the functioning of the M4 rifle? 1.Feeding 2.Chambering 3.Locking 4.Firing 5.Unlocking 6.Extract ing 7.Ejecting 8.Cocking
What part of the M4 Rail Adapter System may be removed to perform PMCS? Only the Lower Assembly
Describe the procedures for clearing the M4 Rifle. LOOK ON PAGE 2
How do you perform a functions check on the M4 Rifle? LOOK ON PAGE 3
If you turn the M203 windage screw one increment, how far does that move the strike of the round at 200 meters? 1 and 1/2 meters
What is the maximum range of the M203? About 400 meters
What is the maximum effective range of the M203 against a fire team sized area target? 350 meters
What is the maximum effective range of the M203 against a vehicle or weapon point target? 150 meters
What is the minimum arming range of the 40 mm round fired from the M203? 14 to 38 meters
What is the rate of fire of the M203? 5 to 7 rounds per minute
What Field Manual covers the M203? FM 3-22.31
What is the casualty radius of a M203 40 mm HE round? 5 meters
What are the 4 fundamentals of M203 marksmanship? 1.Steady Position 2.Aiming 3.Breathing 4.Trigger Control
The M203 uses several fixed type, low velocity 40 mm rounds. Name some of the common types of rounds used. M433 High Explosive Dual Purpose, M406 High Explosive, M83A1(white)M661(Green)M662(Red)–Star Parachute, M585 White Star Cluster, M713(Red Smoke)M715(Green Smoke)M716(Yellow Smoke)–Ground Marker, M781 Practice, M651 Tactical CS, Buckshot
What are the two common malfunctions of the M203? Failure to cock, Failure to lock
What are the five common stoppages of the M203? Failure to fire, Failure to extract, Failure to eject, Failure to chamber, Safety Fails to stay in position
What are the two types of sights on the M203? Leaf, Quadrant
Describe the M203. The M203 grenade launcher is a lightweight, single-shot, breech-loaded, pump action(sliding barrel), shoulder-fired weapon that is attached to an M16 rifle series, or the M4 carbine series with the M203A1, and M4 carbine series with the rail system.
At what range do you zero the M203? 200 meters
How long should you wait before opening the breach to unload the weapon if you happen to have a misfire with the M203? 30 seconds
What is the maximum range of the M249? 3,600 Meters
What is the maximum effective range of the M249 with tripod and T+E? 1,000 Meters
What is the maximum range of the M249 against an area target for both tripod and bipod? Tripod – 1,000 Meters Bipod – 800 Meters
What is the maximum range of the M249 against a point target for both tripod and bipod? Tripod – 800 Meters Bipod – 600 Meters
What does S.A.W. stand for? Squad Automatic Weapon
What is the weight of the M249? 16.41 Pounds
What is the basic load of ammunition for the M249? 1,000 Rounds (in 200 round drums)
What is the length of the M249? 40.87 Inches
Describe the M249. The M249 machine gun is a gas-operated, air-cooled, belt or magazine-fed, automatic weapon that fires from the open-bolt position.
What field manual covers the M249? FM 3-22.68
What are the rates of fire for the M249? Sustained rate is 100 rounds per minute, Rapid rate is 200 rounds per minute, Cyclic rate is 650 to 850 rounds per minute
What are the 8 major groups of the M249? Operating Rod Group Barrel Group Handguard Group Buttstock and Buffer Assembly Group Trigger Mechanism Group Gas Cylinder Group Bipod Group Receiver Group
The M249 is loaded, fired, unloaded and cleared from what bolt position? The open bolt position
What are the steps to the cycle of functioning for the M249? Feeding Chambering Locking Firing Unlocking Extracting Ejection Cocking
How do you adjust for windage with the M249? Adjustments for windage are made by traversing the rear sight right and left along the sliding scale.
How do you adjust for elevation with the M249? Adjustments for elevation (range) require the automatic rifleman to turn the elevation knob (closest to the buttstock) on the rear sight to the desired range setting.
Name 3 assault firing positions used with the M249. Shoulder Hip Underarm
What are two unique features of the M249? It has a regulator to change the rate of fire, and it is fed by M16 magazines as well as belt fed
What is the weight of the M240B? Approximately 27.6 pounds
What Field Manual covers the M240B? FM 3-22.68 Chapter 3
Describe the M240B. The M240B is a belt-fed, air-cooled, gas-operated, fully automatic machine gun that fires from the open bolt position.
What is the sustained rate of fire for the M240B? 100 Rounds per minute fired in 6 to 9 round bursts and 4 to 5 seconds between bursts. Barrel change every 10 minutes.
What is the rapid rate of fire for the M240B? 200 Rounds per minute fired in 10 to 13 round bursts and 2 to 3 seconds between bursts. Barrel change every 2 minutes.
What is the cyclic rate of fire for the M240B? 650 to 950 Rounds per minute fired in continuous bursts. Barrel change every minute.
What is the maximum range of the M240B? 3725 meters
What is the maximum effective range of the M240B with tripod and T&E? 1100 meters
What is the maximum effective range of the M240B for an area target? Tripod –1,100 meters; Bipod – 800 meters
What is the maximum effective range of the M240B for a point target? Tripod – 800 meters, Bipod – 600 meters
What is the length of the M240B? 49 inches
What is the maximum tracer burnout for the M240B? 900 meters
What types of ammunition can be used with M240B? M80 – Ball, M61 – Armor Piercing, M62 – Tracer, M63 – Dummy, M82 – Blank
What is the M2 .50 Cal machine gun used for? Defend against low-flying hostile aircraft, support the infantryman in both attack and defense, destroy lightly armored vehicles, provide protection for motor movements, vehicle parks & train bivouacs, and recon by fire on suspected enemy positions
What is the weight of the M2 .50 Cal machine gun? 84 lbs
Which field manual FM covers the M2 .50 Cal? FM 3-22.65
What is the importance of correct head space adjustment on the .50 Cal machine gun? Incorrect head space adjustment can cause a malfunction of the gun and lead to sluggish operation or failure to function freely.
What is the length of the barrel of the .50 Cal? 45 iches
What is the maximum range of the .50 Cal? 6,764 Meters
What is the muzzle velocity of the .50 Cal? 3,050 feet per second
What is the description of the M2 .50 Cal Machine Gun? The M2 is a belt-fed, recoil-operated,air-cooled, crew-served machine gun. The gun is capable of single shot, as well as automatic fire, and operates on the short recoil principle.
What is the maximum effective range of the .50 Cal against point and area targets? Point targets Single shot- 1,500 meters Area shot- 1,830 meters
To control the rate of fire on the M2, the gunner may use what methods of fire? 1.Single shot 2.Slow 3.Rapid 4.Cyclic
Describe the Single Shot method of fire on the M2 .50 Cal. Place the gun in the single-shot mode and engage the target with aimed shots. The machine gun is accurate out to 1,500 meters.
Describe the Slow method of fire on the M2 .50 Cal. Slow fire consists of less than 40 rounds per minute, in bursts of five to seven rounds, fired at 10- to 15-second intervals.
Describe the Rapid method of fire on the M2 .50 Cal. Rapid fire consists of more than 40 rounds per minute, fired in bursts of five to seven rounds, at 5- to 10-second intervals.
Describe the Cyclic method of fire on the M2 .50 Cal. Cyclic fire is when the weapon fires 450 to 550 rounds per minute.
What is the length of the .50 Cal, overall? Approximately 65.13 inches
What is the cyclic rate of fire of the M2 .50 Cal? 450-550rounds a minute
What type of front sight does the M2 .50 Cal have? A semi-fixed blade type with cover
What type of rear sight does the M2 .50 Cal have? A leaf type rear sight graduated in both yards and mils
What are the common malfunctions of the M2 .50 Cal? 1.Failure to function freely 2.Uncontrolled automatic fire
What are the common stoppages of the M2 .50 Cal? Failure to feed, Chamber, Lock, Fire, Unlock, Extract, Eject, Cock
What are the ten major components and assemblies of the M2 .50 Cal? 1.Barrel Group 2.Carrier Assembly 3.Back plate Group 4.Receiver Group 5.Bolt Stud 6.Cover Group 7.Barrel Buffer Body 8.Barrel extension group 9.Bolt Group 10.Driving Spring Rod Assembly
Name the five phases in Basic Rifle Marksmanship. Preliminary Rifle Instruction; Downrange Feedback; Field Fire; Advanced Rifle Marksmanship; Advanced Optics, Laser and Iron Sights
What is the purpose of a weaponeer? LOOK ON PAGE 3
During Preliminary Marksmanship Training (PMI), what are the only two positions taught? Individual Foxhole Supported; Basic Prone Unsupported
What are the steps required in order to mechanically zero the M4? LOOK ON PAGE 1
What are the steps required in order to battle sight zero the M4? LOOK ON PAGE 2
Created by: r.burns