The barrel latch, when depressed, unlocks the barrel so it can be moved forward along the receiver assembly. As the barrel and barrel extension, which is interlocked with the cocking lever, move forward, the cocking lever is forced downward. The cocking lever, in turn, forces the spring-loaded firing pin rearward. At the same time, the spring-loaded follower follows the barrel extension forward. As the barrel continues its forward movement, the barrel extension disengages from the cocking lever; the movement of the follower is restricted by the receiver and the follower holds the cocking lever in the down position. When the barrel is moved rearward, the follower is driven rearward; the cocking lever again engages the barrel extension, and the firing pin moves slightly forward and engages the sear.

BARREL STOP

The barrel stop limits the forward motion of the barrel assembly. This prevents the barrel assembly from sliding off the receiver-assembly barrel track during loading and cocking operations. When depressed, the barrel stop allows the barrel assembly to be removed from the receiver assembly for maintenance purposes.

CLEARING THE GRENADE LAUNCHER

Before clearing the launcher, be sure to point the muzzle clear of all other personnel within the area. Press the barrel latch and slide the barrel forward until the barrel stop is engaged. Inspect the chamber for the possible presence of a round, expended casing, or other obstruction, and remove it if they are present. Be sure the barrel, bore, and chamber are wiped dry with a clean cloth after checking and before firing.

LOADING PROCEDURES

Press the barrel latch and slide the barrel assembly forward until the barrel stop is engaged. Insert a cartridge into the chamber; slide the barrel-assembly sharply rearward until the barrel locks; and then move the safety rearward.

FIRING PROCEDURES

The grenade launcher may be fired from any of the following positions: prone, sitting, kneeling, or standing. For all positions, the firing procedures are as follows:

1. With the grenade launcher loaded, position the weapon and sight.

2. Move the safety to the fire position.

3. Place the butt of the stock firmly against your shoulder. In firing long range from the prone position, place the butt of the stock firmly on the ground. Take aim and squeeze the trigger to fire the weapon.

WARNING

When firing high-explosive (HE) rounds at targets within leaf sight ranges of 50 to 80 meters, you should be in a protected position. Also, targets within an 80-meter radius of unprotected friendly troops should not be engaged. The danger radius of practice rounds is 20 meters. In addition, observe precautions and warnings pertaining to the type of ammunition being used.