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M249 Automatic Rifle Operators Course

M249 Automatic Rifle Operators Course. M249 Automatic Rifle Operators Course. OVERVIEW I Orientation and Mechanical Training II Techniques of Fire and Employment III Preparatory Marksmanship Training. M249 Automatic Rifle Operators Course. OVERVIEW CONTINUED IV Performance Evaluation

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M249 Automatic Rifle Operators Course

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  1. M249 Automatic RifleOperators Course

  2. M249 Automatic RifleOperators Course OVERVIEW I Orientation and Mechanical Training II Techniques of Fire and Employment III Preparatory Marksmanship Training

  3. M249 Automatic RifleOperators Course OVERVIEW CONTINUED IV Performance Evaluation VI LIVE FIRE (Practice & Evaluation)

  4. M249 Automatic RifleOperators Course OPRENTATION AND MECHANICAL TRAINING Basic Weapons Safety Rules 1. Treat every Weapons as if it were Loaded! 2. Never point a weapon at anything you don’t intend to shoot.

  5. M249 Automatic RifleOperators Course 3. Keep your finger off the trigger until your weapon is pointed down range and your sight are on target. 4. Don’t shoot anything you can’t positively identify; know what is behind it.

  6. M249 Automatic RifleOperators Course 5. Always carry your weapons so that you can control the direction of the muzzle, even if you stumble.

  7. M249 Automatic RifleOperators Course CLASSROOM SAFETY RULES AND PROCEDURES 1. Do not intentionally point the weapon at yourself or others during weapon handling exercises (some pointing during training is unavoidable as weapons are cleared and made safe).

  8. M249 Automatic RifleOperators Course 2. Handle the weapon only when told to do so. 3. No horseplay of any kind allowed. 4. Do not get ahead of the instructor or anticipate instructions. 5. Don’t let the bolt slam forward on an empty chamber

  9. M249 Automatic RifleOperators Course 6. During disassembly, ensure the bolt is forward before removing operating rod assembly. 7. If at any time, you don’t understand the instruction or have difficulty or have difficulty understanding an operation or a procedure, ask questions.

  10. M249 Automatic RifleOperators Course M249 Automatic Rifle Characteristics Description 1. Air cooled 2. Disintegrating metallic split link belt fed or magazine fed (Emergency situations only) 3. Gas operated 4. Fixed headspace. Allows for quick barrel changes for cooling and Maintenance

  11. M249 Automatic RifleOperators Course 5. Fires from the open bolt position. 6. 5.56mm NATO 7. Weight – 16.5 lb.

  12. M249 Automatic RifleOperators Course Performance Range Maximum – 3,600 meters Maximum effective range 1. Point target – 600 meters 2. Area target – 800 meters 3. Suppression – 1,000 meters 4. Maximum extent of grazing fire- 600 meters 5. Tracer burnout 900 meters 6. Basic load – 800 rds

  13. M249 Automatic RifleOperators Course Rates of Fire Sustained – 50 RPM (3-5 rd. burst with4-5 sec. between bursts). Barrel change every 200 rds. Rapid – 100 RPM (8-10 rd. burst with 2-3 seconds between bursts). Barrel change every 200 rds. Cyclic – 800 RPM.

  14. M249 Automatic RifleOperators Course AMMUNITION TYPES, CARE & HANDLING

  15. M249 Automatic RifleOperators Course AMMUNITION TYPES, CARE & HANDLING Storage. Ammunition is stored under cover. If ammunition is in the open, it must be kept at least 6 inches above the ground and covered with a double thickness of tarpaulin. The cover must be placed so that it protects the ammunition yet allows ventilation. Trenches are dug to divert water from flowing under the ammunition. Care, Handling, and Preservation. Ammunition should not be removed from the airtight containers until ready for use. Ammunition removed from the airtight containers, particularly in damp climates, may corrode.

  16. M249 Automatic RifleOperators Course AMMUNITION TYPES, CARE & HANDLING Packaging The ammunition case contains 1600 rounds. Inside the case is two metal cans containing 800 rounds ( 4 assault packs with 200round each.

  17. M249 Automatic RifleOperators Course NOMENCLATURE Eight Major Groups 1. Operating Rod Group 2. Barrel Group 3. Hand guard Group 4. Buttstock and Buffer Assembly Group 5. Trigger Mechansm Group 6. Gas Cylinder Group 7. Bipod Assembly Group 8. Receiver Group

  18. M249 Automatic RifleOperators Course Nomenclature

  19. M249 Automatic RifleOperators Course External Nomenclature • 1. Barrel Assembly • 2. Heat Shield • 3. Rear Sight Assy. • 4. Cover Assembly • 5. Feed Tray • 6. Cocking Handle Assy. • 7. Buttstock Assy. • 8. Bolt Assembly • 9. Slide Assembly • 10.Return Rod /Transfer Mechanism Assy. • 11. Reciever Assy. • 12. Trigger Assembly • 13. Handguard • Sling • Bipod Assembly • Gas Cylinder Assy. • Gas Cylinder Piston • Return Rod Spring

  20. M249 Automatic RifleOperators Course Clearing Procedures 1. Pull cocking handle to the rear and lock bolt into rear position, return cocking handle to the forward position 2. Place safety to safe

  21. M249 Automatic RifleOperators Course Clearing Procedures cont. 3. Raise the cover and inspect the Five Safety Points 1) Feed Pawl Assembly under cover 2) Feed Tray Assembly 3) Lift feed tray assembly and check chamber 4) Check the space between the bolt assembly and chamber 5) Check the magazine well 4. Close the cover ,place to fire, pull the cocking handle to the rear and ride the bolt forward while pressing the trigger to the rear

  22. M249 Automatic RifleOperators Course LOADING • Full-Load • Lock bolt to rear and return cocking handle forward • Safety to Safe. • Raise Cover & clear Chamber • Place link belt in feed tray with first round against cartridge stop • Close cover, make sure it locks shut. • NOTE: DO NOT PLACE WEAPON TO FIRE UNTIL YOU ARE READY TO USE IT

  23. M249 Automatic RifleField Strip (Disassembly) Clear Weapon 1. Pull upper retaining pin to the left, butt stock will pivot downward 2. Push in and up on the back of transfer mechanism (TM) 3. Remove TM , spring, and return rod. Separate springfrom the rod. 4. Pull cocking handle to the rear removing the operating group 5. Rotate the bolt and pull it out of slide assembly. 6. Separate slide assembly from piston by depressing retaining pin to the left

  24. M249 Automatic Rifle Field Strip (Disassembly) 7. Remove the barrel group. 8. Remove gas regulator and collar

  25. M249 Automatic Rifle Field Strip (Disassembly) 9. Remove the handguard assembly 10. Remove butt stock

  26. M249 Automatic Rifle Field Strip (Disassembly) 11. Remove the gas cylinder and bipod group

  27. M249 Automatic Rifle Assembly In Reverse Order

  28. M249 Automatic Rifle Function Check • Pull the cocking handle to the rear, locking the bolt to the rear of the receiver. • While keeping positive control of the cocking handle place to safe and squeeze trigger( should not fire) • Place to fire, squeeze trigger and ride the bolt forward

  29. M249 Automatic Rifle Malfunctions, Stoppages, Misfiresand Immediate actions Definitions • Malfunction: A malfunction occurs when a mechanical failurecauses the weapon to fire improperly. • Stoppage: Any interruption in the cycle of operation of the gun. • Immediate Action: Prompt actions taken to overcome the stoppage.

  30. M249 Automatic Rifle Malfunctions, Stoppages, Misfiresand Immediate actions Definitions • Remedial Action: Action taken to identify stoppage, in immediate action fails. • Cook-off: Ignition of a chambered round of ammunition due to the heat of the weapon. Hot or Cold gun: (Peacetime classification only in the interest of safety) Hot gun- more than 200 rounds fired within a 2 minute period

  31. M249 Automatic Rifle Malfunctions, Stoppages, Misfiresand Immediate actions Warning If nothing is ejected and you have a hot gun (200 rounds within a 2 minute period). Do not open the cover. Place safety to safe, keep machine gun pointed down range, and remain away from the weapon for 15 minutes. After 15 minutes clear the machine gun. The climate conditions can also affect how fast the weapons becomes “hot”

  32. M249 Automatic Rifle Malfunctions Uncontrolled Fire (Runaway Gun) Uncontrolled fire (the weapon continues to fire after the trigger is released). This is usually caused by, the gunner not pulling and holding the trigger all the way to the rear. The following are immediate actions for uncontrolled fire: (1)   The gunner holds the weapon on target and fires the remaining ammunition. (2)   The gunner stops the weapon from firing by breaking the belt of ammunition. (3)   The gunner as a last resort pulls the cocking handle to the rear thus, locking the bolt to the rear of the receiver.

  33. M249 Automatic Rifle Malfunctions Sluggish Operation Sluggish operation is due to excessive friction caused by carbon build-up, improper lubrication, or burred parts. Corrective action includes cleaning, lubricating inspecting, and replacing worn parts.

  34. M249 Automatic Rifle Stoppages STOPPAGE PROBABLE CAUSE CORRECTIVE ACTION

  35. M249 Automatic Rifle Stoppages STOPPAGE PROBABLE CAUSE CORRECTIVE ACTION

  36. M249 Automatic Rifle Stoppages STOPPAGE PROBABLE CAUSE CORRECTIVE ACTION

  37. M249 Automatic Rifle Stoppages STOPPAGE PROBABLE CAUSE CORRECTIVE ACTION

  38. M249 Automatic Rifle Immediate Action Immediate action is action taken to reduce a stoppage without looking for the cause. Immediate action should be taken in the event of either a misfire or a cook off. A misfireis the failure of a chambered round to fire. Such failure can be due to an ammunition defect or faulty firing mechanism.

  39. M249 Automatic Rifle Immediate Action A cook offis the firing of a round by the heat of a hot barrel and not by the firing mechanism. Cookoffs can be avoided by applying immediate action within 10 seconds after a failure to fire. If the M249 stops firing, the gunner performs the following immediate actions are taken. (An effective memory aid is POPP, which stands for pull, observe, push, and press.)

  40. M249 Automatic Rifle Immediate Action a. Pulls and locks the cocking handle to the rear while observing the ejection port to see if a cartridge case, belt link, or round is ejected. Ensures that the bolt remains to the rear to prevent double feeding if a round or cartridge case is not ejected. b. If a cartridge case, belt link, or a round is ejected, returns cocking handle to forward position, aim on the target, and presses the trigger. If the weapon still does not fire, takes remedial action. If a cartridge case, belt link, or round is not ejected, takes remedial action.

  41. M249 Automatic Rifle Remedial Action Cold Weapon Procedures When a stoppage occurs with a cold weapon and immediate action has failed, the gunner uses the following procedures. (1)   Pulls the cocking handle to the rear, locking the bolt. Returns the cocking handle and places the safety to SAFE. (2)   Places the weapon on the ground or away from his face and opens the cover, performs the five-point safety check. Reloads and continues to fire. (3)   If the weapon does not fire, clears the weapon and inspects it and the ammunition.

  42. M249 Automatic Rifle Remedial Action Hot Weapon Procedures If the stoppage occurs with a hot weapon (200 rounds or more in 2 minutes or as noted above for training), the gunner moves the safety to SAFE, waits 5 seconds (during training, lets the weapon cool for 15 minutes), uses the same procedures as outlined for cold weapon procedures.

  43. M249 Automatic Rifle Remedial Action Jammed Cocking Handle If a stoppage occurs and the cocking handle cannot be pulled to the rear by hand (the bolt may be fully forward and locked or only partially forward), the gunner takes the following steps. (1)   Tries once again to pull the cocking handle by hand. WARNING Do not try to force the cocking handle to the rear with your foot or a heavy object. This could damage the weapon.

  44. M249 Automatic Rifle Remedial Action (2)   If the weapon is hot enough to cause a cook off, moves all personnel a safe distance from the weapon and keeps them away for 15 minutes. (3)   After the gun has cooled, the gunner will pull the cocking handle to the rear. Ensures rearward pressure is kept on the cocking handle until the TM is removed. Opens the cover and disassembles the gun.

  45. M249 Automatic Rifle Remedial Action (4)   Removes the round or fired cartridge. Uses cleaning rod or ruptured cartridge extractor if necessary. (a)   In a training situation, after completing the remedial action procedures, the gun should not be fired until an inspection by an CA intructor has been made. (b)   In a combat situation, after the stoppage has been corrected, the gunner changes the barrel and tries to fire. If the weapon fails to function properly, the gunner sends it to Combat Arms personnel.

  46. M249 Automatic Rifle Cleaning and Lubrication Warning Be sure weapons is cleared before disassembly, cleaning, inspecting, transporting and storing. Using gasoline, kerosene, hydraulic oil, benzene, bensol, high-pressure water, steam, or air forcleaning isPROHIBITED

  47. M249 Automatic Rifle Cleaning and Lubrication Caution Do not use abrasives to clean the bore, piston, gas cylinder, or gas regulator plug. Do not submerge buffer in any liquid. Wipe clean with wiping rag only. Do not apply lubricants to composite/rubber components.

  48. M249 Automatic Rifle Cleaning and Lubrication The M249 machine gun should be cleaned immediately after firing. At a minimum, the M249 should be cleaned after firing a basic load of 900 to 1,200 rounds. The gunner disassembles the M249 into its major groups for cleaning. All metal components and surfaces that have been exposed to powder fouling should be cleaned using CLP on a bore-cleaning patch. CLP is used on the bristles of the receiver brush to clean the receiver. After the M249 is cleaned and wiped dry, a thin coat of CLP is rubbed on using a cloth. This lubricates and preserves the exposed metal parts during all normal temperature ranges.

  49. M249 Automatic Rifle Cleaning and Lubrication CAUTION When using CLP, do not use other cleaners. Never mix CLP with RBC or LSA. When cleaning the barrel, avoid getting CLP or RBC in the gas regulator. Damage could occur to the weapon.

  50. M249 Automatic Rifle Cleaning and Lubrication (1)   Clean the bore using CLP or RBC and a bore brush with a cleaning rod. Do not reverse direction of the bore brush while it is in the bore. (a)   Run the brush through the bore several times until most of the powder fouling and other foreign matter has been removed. (b)   Swab out the bore several times using a cleaning rod and a swab wet with CLP. (c)   Swab out the bore several times using a cleaning rod and a dry swab.

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