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97th Security Forces Squadron

97th Security Forces Squadron. Combat Arms Section. Altus Air Force Base Oklahoma. M240B MACHINE GUN. Air Force Qualification Course (AFQC). COURSE OVERVIEW. FIVE PERIODS OF INSTRUCTION I. ORIENTATION & MECHANICAL II. TECHNIQUES OF FIRE & EMPLOYMENT III. PREPARATORY MARKSMANSHIP

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97th Security Forces Squadron

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  1. 97th Security Forces Squadron Combat Arms Section Altus Air Force Base Oklahoma

  2. M240B MACHINE GUN Air Force Qualification Course (AFQC)

  3. COURSE OVERVIEW • FIVE PERIODS OF INSTRUCTION • I. ORIENTATION & MECHANICAL • II. TECHNIQUES OF FIRE & EMPLOYMENT • III. PREPARATORY MARKSMANSHIP • IV. PERFORMANCE EVALUATION • V. LIVE FIRE (PRACTICE & QUALIFICATION • FREQUENCY OF TRAINING • 12 MONTHS

  4. CLASSROOM PROCEDURES • Training times: Classroom, Live-Fire, Overall. • Safety & Precautions. (MSDS’s in Office) • Break procedures. • Location of facilities: • Latrines. • Smoking area. • Telephones. • Food & Beverages. • Student Critiques.

  5. FORMS

  6. SAFETY

  7. WEAPON SAFETY • Treat every weapon as if it were loaded. • Never point a weapon at anyone or anything you do not intend to shoot. • Always keep your finger away from the trigger of any weapon until you intend to shoot. • Don’t shoot anything you can’t positively identify; know what’s behind it • Always carry your weapon so that you can control the direction of the muzzle, even if you stumble.

  8. CLASSROOM SAFETY • Do not intentionally point the weapon at yourself or others during weapons handling exercises. • Handle the weapon only when told to do so. • No horseplay of any kind allowed • Don't get ahead of the instructor and don't anticipate instructions. • Don’t let the bolt slam forward on an empty chamber • If at any time you don't understand the instructions, ASK QUESTIONS!

  9. M240B SAFETY • Make sure the barrel is locked tightly before firing • Ensure you only use the assigned barrel/spare barrel for your weapon. These barrels have been calibrated for this weapon. Rotate usage of the barrels • Do not interchange barrel assembly or bolt assembly from one machine gun to another. Doings so can result in injury or even death! • Never reload a runaway gun until it is repaired. Be sure machine gun is cleared before removing it from a vehicle or tripod mount • A hot barrel can burn you. If barrel is hot, use your heat resistant mittens.

  10. CHARACTERISTICS

  11. DESCRIPTION • AIR COOLED • BELT-FED DISINTEGRATING METALLIC SPLIT BELT • GAS OPERATED • FIXED HEADSPACE • FIRES FROM OPEN BOLT POSITION • FIRES 7.62 X 51mm NATO (.308 cal)

  12. CHARACTERISTICS & PERFORMANCE • Manufacturer FN MFG. • Weight 27.6 lb. (12.52 kg) • Length 49 inches (overall) • Maximum adjustable range 1,800 meters • Maximum range 3,725 meters • Maximum effective range • Point Target (with tripod) 800 meters • Area Target (with tripod) 1800 meters • Tracer Burnout 900 meters

  13. RATES OF FIRE • SUSTAINED: • 100 RPM (rounds per minute) • 6-9 round bursts with 2-3 seconds between bursts • Barrel change every 10 minutes • RAPID: • 200 RPM (rounds per minute) • 6-9 round bursts with 2-3 seconds between bursts • Barrel change every 2minutes • CYCLIC: • 650-950 RPM (rounds per minute) • Barrel change every 1minute

  14. AMMUNITION

  15. AMMUNITION BALL M80 • Copper gilded projectile • Plain Tip • Used on personnel & light material targets

  16. AMMUNITION (Cont) TRACER M62 • Copper gilded projectile • Orange or Red painted tip • Usage: • Fire observation • Short range incendiary effect • Signaling

  17. AMMUNITION BLANK M82 • No projectile • Used for simulating live fire (training with blank fire adapter (BFA) only)

  18. AMMUNITION DUMMY M63 • Case is corrugated or has three holes drilled in case • No primer or powder • Solid Black

  19. AMMUNITION ARMOR-PIERCING M61 • Copper gilded projectile • Black painted tip • For lightly armored targets

  20. AMMUNITION (Cont) PACKAGING • BULK ISSUE: • 1,500 round cans • BANDOLEER: • 100 round assault packs • 200 rounds per can

  21. CARE, HANDLING, & STORAGE OF AMMO • Don’t open container until needed • Don’t expose to prolong sunlight. Keep covered with tarps, cammo netting, etc. • Don’t oil or grease ammo • Store ammo minimum 6 inches off ground and allow for ventilation

  22. NOMENCLATURE

  23. NOMENCLATURE Eight Major Components • Barrel Assembly • Buffer Assembly • Driving Spring Rod Assembly • Bolt & Operating Rod Assembly

  24. NOMENCLATURE Eight Major Components (Cont) 5. Trigger Housing Assembly 6. Cover Assembly 7. Feed Tray Assembly 8. Receiver Assembly

  25. BARREL COMPONENTS Flash Suppressor Gas Regulator Plug Front Sight Assembly Barrel Barrel Carrying Handle Assembly

  26. BUTTSTOCK & BUFFER COMPONENTS Buttstock Buffer Catch Butt Plate

  27. TRIGGER HOUSING COMPONENTS Trigger Assembly Safety Grips

  28. COVER COMPONENTS Accessory Mounting Rail Cover

  29. RECEIVER COMPONENTS Handguard Cocking Assembly Rear Sight Assembly Bipod Assembly Barrel Locking Latch Ejection Port Cover

  30. METHODS OF DESTRUCTION • MECHANICAL • BURNING • DEMOLITION • DISPOSAL • GUNFIRE • MAY USE A COMBINATION OF ALL METHODS • LOCAL COMMANDER’S DECISION

  31. CLEARING, LOADING, RELOADING

  32. CLEARING PROCEDURES • Place SAFETY to Fire 2. Lock Bolt to the rear and return Cocking Handle Forward 3. Place SAFETY to SAFE

  33. CLEARING PROCEDURES 4. Push in latches and open cover assembly 5. Remove Ammunition if present

  34. CLEARING PROCEDURES 6. Raise Feed tray 7. Conduct 4 point check a. Check feed pawl assembly under cover b. Check Feed Tray c. Lift the tray and inspect the chamber d. Check the Receiver 8. Lower Feed Tray

  35. CLEARING PROCEDURES 9. Place Safety to FIRE 10. Hold Cocking Handle to the rear, squeeze trigger, and ease bolt forward to close & lock 11. Close cover assembly. Ensure it locks shut

  36. LOADING PROCEDURES 1. Clear weapon (leaving cover open) 2. Place link belt in feed tray with first round against cartridge stop and open side of links down 3. Close Cover, make sure it locks shut

  37. LOADING PROCEDURES 4. Pull Cocking Handle to the rear and return the Cocking Handle to forward position 5. If weapon is not to be fired immediately, place Safety to “S” (safe)

  38. OPERATOR MAINTENANCE

  39. DISASSEMBLY Field Strip of M240B into eight (8) major groups

  40. DISASSEMBLY • Clear Weapon • Depress Barrel locking latch (A) and hold • Turn Barrel Release/Carrying Handle to upright position (B) • Remove Barrel. Push forward and lift barrel out NOTE: BE SURE BOLT IS FORWARD OR RECEIVER CAN BE DAMAGED

  41. DISASSEMBLY • Remove Heat Shied Assembly from Barrel. Lift rear of Heat Shield Assembly off Barrel then pry front tabs out of holes on gas hole bushing

  42. DISASSEMBLY • Depress spring and remove Trigger Spring Pin • Pull Trigger Housing down and back to remove

  43. DISASSEMBLY • Depress Back Plate Latch and lift buffer/stock assembly straight up

  44. DISASSEMBLY • Press Spring in, up and then pull out

  45. DISASSEMBLY • Depress Cover Latches and raise Cover Assembly • Pull Cocking Handle back, the pull Bolt & Operating Rod Assembly out

  46. DISASSEMBLY • Close Cover • Push out Spring Pin (A) as far as possible with the back of buffer • Remove Pin with fingers (B) • Depress Cover Latches, lift upwards and remove Cover Assembly (C) • Remove Feed Tray (D)

  47. DISASSEMBLY • Extend Bipod Legs to down and locked position (1) • Pull Hand guard straight down and off Gas Cylinder

  48. CLEANING & INSPECTION PROCEDURES

  49. CLEANING NOTES • Be sure weapon is cleared before disassembly. Cleaning, inspecting, transporting, & storing • Using Gasoline, Kerosene, Hydraulic Oil, Benzine, Bensol, high-pressure water, steam, or air for cleaning is PROHIBITED • Do not use abrasives to clean the bore, piston, gas cylinder, or gas regulator plug • Do not apply lubricants to composite/rubber components • Only use CLP or LSA/RBC to clean/lubricate the weapon

  50. CLEANING & INSPECTION Gas System • Press and rotate collar counterclockwise, until it releases then pull it out • Pull Gas Regulator Plug from Gas Hole Bushing

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