M60 Nomenclature

GENERAL AND DETAILED DISASSEMBLY AND ASSEMBLY MACHINEGUN 7.62 MM. M60.

1. SHOULDER GUN STOCK

2. BUFFER ASSEMBLY AND OPERATING-ROD ASSEMBLY

RETAINING BUFFER YOKE BUFFER ASSEMBLY

RETAINING BUFFER YOKE BUFFER ASSEMBLY

OPERATING-ROD ASSEMBLY

OPERATING-ROD ASSEMBLY

DRIVING-SPRING DRIVER ASSEMBLY

SPRING (DRIVING)

3. BOLT ASSEMBLY

4. TRIGGER MECHANISM GRIP GROUP

BOLT BODY

BOLT BODY

BOLT PLUG

BOLT PLUG PIN ACTUATING-CAM

ASSEMBLY

LEAF SPRING RETAINING PIN

SEAR PIN

SEAR

FIRING-PIN SPRING

FIRING PIN

SEAR

SEAR PIN

TRIGGER RETAINING PIN

TfllGGEH MECHANISM

GRIP

TRIGGER SPRING

FIRING-PIN BEARING

SEAR-PLUNGER [SPRING SEAR PLUNGER

TRIGGER

TRIGGER

6. COVER ASSEMBLY AND CARTRIDGE-THAY ASSEMBLY GROUP

COVER ASSEMBLY

S. RECEfVER GROUP

6. COVER ASSEMBLY AND CARTRIDGE-THAY ASSEMBLY GROUP

COVER ASSEMBLY

CARTRIDGE-TRAY ASSEMBLY

HINGE-PIN HINGE-PIN COVEH LATCH

SPRING (COVER)

HINGE-PIN HINGE-PIN COVEH LATCH

FIRING-PIN BEARING

SEAR-PLUNGER [SPRING SEAR PLUNGER

# Training Aids and Devices

Landscape target.

Chalkboard used to record direction and elevation readings.

Concurrent Training Station for Techniques of fire.

One principal instructor.

One alternate principal instructor.

One chartman.

One public address system.

# Training Aids and Devices

Chart, Maximum Ordinate.

Chart, Plunging and Grazing Fire.

Chart* Classes of Fire with Respect to the Machinegun.

Punchboard training aid or chalkboard.

CONDUCT OF FIRING

Gunners must fire the transition course BASIC MARKSMANSHIP FIRING-TRANSITION RANGE, PRACTICE RANGE, as a minimum, once for practice and once for record.

Firing Line. Two machinegun positions are established in each lane, and a three-man crew consisting of a gunner, assistant gunner, and ammunition bearer is assigned to each position. Each lane is controlled by an NCO,

One target control operator is assigned to each lane. If the targets are operated electrically, he will raise and lower them as necessary- If the targets are operated manually, he will telephone instructions to pit personnel.

See appendix C for safety considerations.

Rules. As each group reports to the tiring line, the following rules are explained. These rules apply to a transition course with double "E,J silhouette targets.

Each gunner is given 120 rounds and 4 minutes to engage the 8 targets in his lane. He may fire a maximum of two bursts (any number of rounds is considered a burst) at each target, but he fires the second burst only if he fails to hit the target with his first burst. If single "E1' silhouette targets are used, gunners should be allotted 180 rounds and a maximum of three bursts per target to compensate for the greater difficulty in engaging them.

Gunners will not fire for record in the same lane in which they fire practice.

The assistant gunner will assist the gunner in locating targets as they appear, in determining their range, and in adjusting fire.

Target number 1 (400 meters) is raised prior to the command to commence firing and is always the first target engaged.

Target number S (800 meters) must be one of the next three targets raised.

The remaining six targets are raised in any sequence, but target operators must have at least three different sequences for raising targets so the gunner will not know which target to expect next.

If a stoppage occurs, the gunner must apply immediate action and, if the stoppage is reduced, continue to fire the course. He may be allowed an additional 15 seconds for each application of immediate action. If a stoppage occurs which cannot be reduced by immediate action, the gunner announces, TIME, and with the assistance of the lane NCO reduces the stoppage. When a gunner announces, TIME, the lane NCO notes how

many targets the gunner has not engaged. After the stoppage has been reduced, the lane NCO allows the gunner 30 seconds to engage each of the remaining targets.

To qualify, the gunner must engage all 8 targets within the time limit and score a minimum of 50 points (5 hits).

Firing the Course* Each gunner field zeros his machinegun prior to firing the course.

Within each lane, one gunner fires while the other gunner dry-fires. Both gunners follow the same procedure. THEY DETERMINE THE RANGE TO EACH TARGET AS IT APPEARS, PLACE THIS SETTING ON THEIR REAR-SIGHT ASSEMBLY, ASSUME PROPER POSITION AND GRIP, OBTAIN CORRECT SIGHT ALINEMENT AND SIGHT PICTURE, AND FIRE SIX- TO NINE-ROUND BURSTS (DRY-FIRE GUNNER SIMULATES FIRING).

If the gunner fails to hit the target with his initial burst, he must use the adjusted-aiming-point method of fire adjustment to try to hit the target with his next burst.

Scoring* A gunner is credited with 10 points for each target he hits. He receives no credit for unfired ammunition.

Scoring is done by the target control operator in each lane and is recorded in the place provided on the same scorecard (DA Form 85) used to record the gunners score on the basic (10-meter) range.

QUALIFICATION SCORES (BASIC AND TRANSITION FIRING)

The score a gunner receives on the basic (10-meter) range is computed as described in the paragraph on maintaining the scorecard. It is recorded on the same scorecard (DA Form 85) used to record the score on the transition range.

Transition firing is the second phase of a gunner's qualification. To qualify on the transition range, gunners must engage eight targets within the prescribed time limit, hitting a minimum of five.

NOTE: If single "E" silhouette targets are used, the gunner should be allocated 180 rounds of 4-1 ammunition and a maximum of 3 bursts at each target for both practice and record firing.

If a gunner qualities on the basic and transition ranges, his overall machinegun qualification is computed as follows;

Add the basic (10-meter) score to the transition score to get the total score.

Determine the qualification (expert, first-class gunner, second-class gunner) from the following information:

BASIC RANGE

TRANSITION RANGE

TOTAL

QUALIFICATION EXPERT FIRST CLASS SECOND CLASS UNQUALIFIED

MIN MAX 65 104 65 104 65 104

MIN MAX

50 80 50 80 50 80

TOTAL POINTS* 155-184 140-154 115-139 Below 115

*Total points used for qualification must reflect a minimum score from both ranges; for example, a gunner who gets an aggregate score of 140 points by scoring 60 points on the basic range and 80 points on the transition range is considered unqualified-

APPENDIX A

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