Consistencia

EVALUATION GUIDELINES TO BE USED DURING TRAINING:

Conditions: Given a tactical defensive scenario in any combat environment (day and night), an M7 bandoleer containing an M18A1 claymore mine, M57 firing device, M40 test set, firing wire with electrical blasting cap, E-Tool, individual combat equipment (782 gear), wood stakes, helmet, and body armor and hearing protection.

Standard: The Seabee must perform circuit testing, install, arm, camouflage, and fire the M18A1 mine to cause detonation or recover the mine without causing accidental detonation.

Administrative Notes: During training, the Seabee will wear 782 gear, helmet, and body armor. When armed with a rifle, the rifle will be positioned over the Seabee's back using the sling or placed alongside the Seabee with muzzle pointing towards the enemy.

PERFORMANCE STEPS:

1. Inspect all components for serviceability.

2. Perform circuit testing.

a. Remove the dust covers 1 from the connectors of the M57 firing device and the M40 test set (Figure 1)

b. Plug the M40 test set into the M57 firing device.

NOTE: One out of every six bandoleers has an M-40 test set. A green tag identifies the bandoleer.

c. Swing the safety bail 2 on the M57 firing device to the FIRE position 3.

NOTE: The safety bail swings between the FIRE position 3 and SAFETY position 4. d. Depress the firing handle 5 and watch the window 6 of the M40 test set for a flash of light.

the mine. If this is the case, you must start over with a new firing wire or repair the damaged wire.

e. Place the safety bail in the SAFE position 4 (Figure 1).

f. Remove the dust cover from the other side of the M40 test set and the shorting plug 10 from the connector of the firing wire.

g. Plug the connector of the firing wire 7 (Figure 2) into the M40 test set 8.

Figure 1 Figure 2

WARNING: Place the attached blasting cap 9 behind a tree, in a hole, or under a sandbag to avoid injury if the blasting cap detonates during the circuit checks. Before testing, move to a safe distance.

h. Swing the safety bail on the M57 firing device to the FIRE position.

i. Depress the firing handle, and watch the window of the M40 test set for a flash of light, which indicates a good circuit.

NOTES: If you cannot see a light, check all the plug connections to make sure they are tight, then try again.

If you still do not see a light, this is a good indicator that the firing wire is defective. This will happen if you drag the firing wire across a sharp object when moving away from the mine. If this is the case, you must start over with new firing wire or repair the old wire.

j. Place the M57 firing device on safe.

k. Disconnect the M40 test set and M57 firing device from the firing wire connector. 3. Install the mine.

a. Put the shorting plug 10 (Figure 2) back on the firing wire connector.

b. Tie the shorting plug end of the firing wire to a fixed object (stake, tree, etc.) at the firing position. c. Select a site within 250 meters of the desired sector of fire (kill zone) (Figure 3).

Figure 3

CAUTION: Ensure that friendly troops are no closer than 16 meters to the rear of the mine. If within 16 to 100 meters of rear, ensure that cover is available. During

installation, the M57 firing device must be kept beside the Seabee installing the mine to prevent accidental firing by another Seabee.

d. Place bandoleer on your shoulder and unroll the firing wire to the selected position for placing the mine.

e. Remove the mine from the bandoleer. Open both pairs of legs to a 45-degree angle with two legs facing the front and two legs facing the rear of the mine.

f. Position the mine on the ground with the words "FRONT TOWARD ENEMY" pointing toward the kill zone.

g. Push the legs about one-third of the way into the ground.

NOTE: There are two types of sights on the M18A1 claymore mine. They are the slit type peep sight and the knife-edge sight. If you have the slit-type peep sight, proceed to step h. If you have the knife-edge sight, proceed to step i.

h. Using the SLIT-TYPE PEEP SIGHT, select an aiming point (tree, rock, etc.) about 50 meters (approximately 150 feet) to the front of the mine and about 2 1/2 meters (8 feet) above the ground (Figure 4).

- Position your eye about 6 inches to the rear of the sight and aim the mine toward the center of the target area.

NOTE: The groove of the sight should be in line with the aiming point.

i. Using the KNIFE-EDGE SIGHT, select an aiming point at ground level about 50 meters (approximately 150 feet) in front of the mine.

- Position your eye about 6 inches to the rear of the sight and align the two edges of the sight with the aiming point (Figure 5).

4. Arm the mine.

a. Ensure that the firing device is in your possession.

b. Unscrew one of the shipping plug priming adapters and carefully slide the slotted end of the priming adapter onto the firing wire of the blasting cap 11, between the crimped connection and the blasting cap (Figure 6).

c. Insert the blasting cap into the detonator well 12, and screw in the adapter.

Figure 6

WARNINGS: To avoid premature detonation, do not drop the blasting cap! Always point the blasting cap out and away from the body.

d. Secure the firing wire to an anchor point about 1 meter to the rear of the mine so that the mine will not become misarranged if the wire is disturbed.

5. Camouflage the mine and the firing wire.

NOTE: The terrain will determine the type and amount of camouflage needed. Remember that your camouflage must blend the mine with the surrounding area so the enemy is unable to visually detect it.

a. Recheck the aim of the mine.

b. Bury the firing wire, if possible, and move back to your firing position.

a. Retest the circuit with the M40 test set after the firing wire is laid out and after the blasting cap is placed inside the mine.

NOTE: To retest the circuit, see step 2 (perform circuit testing).

WARNING: Ensure that all friendly troops within 250 meters to the front and sides and 100 meters to the rear of the mine are under cover. Position yourself behind cover or in a fighting position when re-testing the circuit with a blasting cap inserted in the mine.

b. Ensure that the safety bail on the M57 firing device is in the SAFE position until ready for use. NOTE: In a training situation, do not leave the firing devices connected to the firing

wire until actual time of firing.

c. Position the firing-device safety bail to the FIRE position when the lead element of enemy formation approaches within 6-9 meters (20-30 feet) of the mine.

d. Squeeze the firing device handle with a firm, quick squeeze to fire the mine. 7. Recover the mine.

a. Place the M57 firing device safety bail in the SAFE position.

b. Disconnect the firing wire from the M57 firing device and replace the dust covers on the connectors.

NOTE: Ensure that you keep the firing device with you throughout the recovery process.

c. Untie the firing wire from the anchor point at the firing position.

d. Move to the claymore and unscrew and remove the priming adapter from the mine.

e. Remove the blasting cap from the priming adapter and place it back on the firing wire spool. f. Screw the adapter back into the detonating well.

g. Remove the firing wire from the anchor point, and place the blasting cap inside the firing wire reel.

h. Pick up the mine and secure the folding legs against the bottom of the mine. i. Roll up the firing wire.

j. Repack the mine and accessories into the M7 bandoleer. REFERENCES: