Before firing

The safety lever put on position "EM = single fire. At single fire the trigger lever (41/11) In connection with its oblong hole (43/1), the safety pin (41/7), the elbow spring with roller (41/10), the catch for single fire (42/3) and the catch for trigger lever (42/4) as disconnector comes into action.

1 Sliding surface

2 Catch for burst

3 Catch for single fire

4 Catch for trigger lever

5 Recess for single fire

Burst Fire
Fig. 42: Functioning position of trigger parte at position "E" = single fire

The trigger lever with its oblong hole can be shifted about 1.5 mm in Its longitudinal direction.

1 Oblong hole

2 Compression bolt with spring

3 Trigger rollers

4 Surface centre of pressure

Hammer And Trigger Machinegun
Trigger lever

In unoperated position, which means without pressure from the hammer, the trigger lever is steadily being pushed forward by means of its pressure bolt with spring (43/2). As soon as the hammer with its single fire notch (42/3) comes in connection with the trigger lever, the latter is pushed backwards overcoming the power of the pressure bolt and its spring. (Note direction of arrow in Fig. 43).

This short longitudinal movement causes a single shot. The catch with its roller (41/10) pushes at single fire the trigger lever steadily against the hammer notch.

Single fire (Fig. 44)

The bolt body presses the release lever (41/3) and thus the sear catch (41/3) forward. The hammer (41/6) is only retained by the trigger lever (41/11).

Mauser Trigger

Fig. 44: Sr.vle fire function - centre of pressure -

Fig. 45: Releasing of hammer

Sear Spring With Roller

Fig. 44: Sr.vle fire function - centre of pressure -

When pulling the trigcjrr extending lever with its recess reaches into the groove of the safety pin limiting the movement of the trigger. At the same time the rear part of the trigger lever is being lifted, the front part lowers and disengages from the single fire notch.

Fig. 45: Releasing of hammer

The hammer Is released (Fig. 45), hits the firing pin and fires the cartridge (Fig. 46).

Smith Wesson Blueprint
Fig. 46: Firing

The hammer Is released (Fig. 45), hits the firing pin and fires the cartridge (Fig. 46).

At this moment the pressure on the trigger lever coming from the hammer is being taken off and the trigger lever goes forward (Fig. 47).

Operating Principle
Fig. 47: After firing

The trigger is still being locked. With the forward movement of the trigger lever its rear part snaps under the pressure of the elbow spring with roller into the trigger lever notch (42/4).

Backward movement

After the cartridge has left the barrel, the bolt goes back and the bolt head carrier pushes the hammer backwards (Fig. 48).

Manual German

Fig. 48: Bolt backward movement

Mk19 40mm Bolt

Fig 49: Hammer engaging in the notch for single fire.

Fig. 50: Sear catch engaging in the notch for burst.

Fig. 48: Bolt backward movement

First the hammer engages in the notch for "single fire14 (Fig. 49), shortly thereafter the sear catch engages In the notch for "burst- (Fig. 50). At the first engagement the trigger lever moves backwards, at the second engagement it comes forward again.

Fig 49: Hammer engaging in the notch for single fire.

Fig. 50: Sear catch engaging in the notch for burst.

Forward movement

The bouncing off from the buffer and the pressure of the releasing recoil make the bolt head carrier move forward. The climbing ramp of the bolt head carrier

(42/1) presses the release lever downwards which releases the catch.

The hammer cannot strike, but is caught on the trigger lever. The trigger lever is jammed between the notch for single fire and the trigger lever notch. In this position the sequence la Interrupted.

To fire another shot, the trigger must be released.

After the trigger is released, the trigger lever (43/3) comes down and releases the rear part of the trigger lever. Due to the pressure from the hammer the trigger lever is pushed back, as far as the longitudinal hole makes it possible and rests over the pull-off surface (43/4). The condition for the next shot is given. Should another shot be fired, the trigger is pulled until the pull-off (Fig. 44). Further pull of the trigger lifts the rear part of the trigger lever, while the front part disengages from the notch for single fire (42/3). The cartridge is fired and all functions repeat themselves.

A turn of the safety lever to "F" = burst also turns the safety pin which brings the groove in front of the extended trigger arm.

Trigger Arm

When the shooter pulls the trigger, all of the extended arm enters in the groove of the safety pin causing a longer trigger pull and the trigger lever is out of roach of the notch for single fire. The hammer is held only by the catch in the notch for burst (Fig. 50).

With every shot the release lever makes a guided motion caused by the climbing ramp of the bolt head carrier (42/1) and the catch emerges from the notch for burst. The hammer strikes the firing pin, as nothing interferes with its motion. This sequence is called automatic fire. Short interruptions of tho automatic fire result in bursts.

The weapon ceases to fire when the trigger is released. The front part of the trigger swings up again and the hammer is caught in the notch for single fire.

Notel

At dingle fire:

The interruption of the cyclic rate is caused through the trigger lever in connection with

1. the position of the safety pin,

2. the longitudinal hole on the trigger lever,

3. the elbow spring with roller,

4. the single fire notch,

5. the trigger lever notch.

At automatic fire:

no Interruption takes place:

1. owing to the position of the safety pin, which gives a longer trigger pull,

2. owing to the trigger lever which swings down until it is out of reach of the notch for single fire,

3. by means of the release lever through the catch releasing tha hammer at the moment the locking takes place.

This results In an uninterrupted cyclic rate until a) the trigger is released, b) the magazine is empty.

1.6. Outfit

1 Carrying sling

2 Muzzle cover

3 Cleaning kit for weapons cal. 7.62 mm - 9 mm

4 Cleaning kit for weapons cal. 5.6 mm - 6.5 mm

5 Magazine carrying bag

Nato Ammunition
Fig. 52: Accessories

2.1. Operating Instructions

2.1.1. Principles on handling and operation

1. Tho rifle i3 always to be handled as if it were loaded and ready to fire.

2. The safety pin has to point continuously at position "S" = safe. Only shortly before firing it has to be turned to position "E" = single fire or "F" = burst.

3. In handling the weapon one seizes it at the grip. When cocking, locking and loading, a6 well as when uncocking and unloading it. the muzzle has to point to the upper side.

4. Blank- and subcalibre ammunition may be employed only when using the training equipment (note para 1.5.1.8.) provided for it.

2.1.2. Preparation of the rifle for firing

Before loading and firing:

1. Free barrel bore from oil

2. Check, if bolt and safety mechanism function properly

3. Magazine must engage properly

4. Check, if the flash hider or rather the blank attachment fits firmly.

2.1.2.1. Loading Before loading:

— Retract the loading lever and put it in the recess of the loading lever housing.

— Insert filled magazine in the magazine shaft until it engages.

— Let the operating handle snap forward.

Fig. 53: Insertion of the magazine

2.1.22. Firing

— Unlock the weapon

— Operate the trigger.

When the fire i9 interrupted or ceased, the weapon has to be locked. 2.1.2.3. Unloading

— Take out the magazine by pushing the release lever forward.

— Draw the loading lever rearward (the cartridge is ejected) and let the lever snap forward.

Magazine Catch

Fig. 54: Removal of magazine

Fig. 54: Removal of magazine

2.1.2.4. Filling and emptying of magazine

— When filling the magazine press the cartridges separately under the magazine lips.

— When emptying the magazine grasp it with one hand so that the points of the cartridge point downwards.

— Press the second cartridge down by means of a wooden chip, whereby the top cartridge falls out by itself.

— Catch falling-out cartridges, e.g. by placing the steel helmet underneath if necessary.

Fig. 55: Emptying of magazine

2.1.2.5. Launching of rifle grenades

— Remove the magazine.

— Retract loading handle and put it in the recess on the loading lever housing.

— Insert propeiiant charge manually into the chamber (Fig. 56).

— Have the bolt with loading handle snapped forward.

— Push the rifle grenade over the flash hider until the abutment of the front sight holder. Note that the spring ring retains the grenade. The rifle is ready to fire.

M16 Exploded View
Fig. 56: Loading of propeiiant charge
Rifle Grenade
Fig. 57: Mounted rifle grenade

2.1.2.6. Firing with training equipment

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