Functioning

4.1 Steps. There are four (4) distinct steps in the functioning of the H&K Pistol P7M13. They are as follows.

4.1.1 First Step—Weapon Loaded and Uncocked. When the H&K Pistol P7M13 is loaded with a magazine and a round is seated in its chamber, the weapon is in the first step of its functioning. Its various parts are in the positions depicted in Figures 12 and 13. The pistol's slide is closed with the face touching the base of the cartridge seated in the weapon's chamber, but the pistol still is fully safe. This is due to the firing pin rebound spring (12) holding the firing pin (14) in the rest position while the cocking lever spring (47) also holds the cocking lever (39) in its forward position. Until deliberate pressure is applied against the cocking grip (38) by the operator, the cocking lever will not allow the sear lever

(27), under pressure of the sear lever spring

(28), to pivot down and disengage the sear. The sear lever therefore remains in contact with the receiver and positioned in front of the firing pin cocking pawl, preventing discharge of the weapon as the firing pin cannot engage the cap of the cartridge seated in the weapon's chamber. The firing pin block (3) also provides a further positive safety. All safety features are retained until pressure is applied to the trigger.

4.12 Second Step—Weapon Loaded and Cocked. Deliberate hand pressure on the cocking grip (38) causes the H&K Pistol P7M13 to cock. When this is done, the pistol is in its second step of functioning as depicted in Figure 14 In this step of the

Figure 12. First step of functioning, H&K Pistol P7M13 (right side view).

Figure 12. First step of functioning, H&K Pistol P7M13 (right side view).

9mm Pistol Parts

weapon's functioning, the cocking lever (39) is pressed back by the cocking grip (38). The cocking latch (45) then engages and holds the cocking lever in place as the sear lever (27) is in front of the release edge of the trigger bar (24). When the sear lever moves back, it overcomes the tension of the firing pin spring (13) and prepares the weapon for aiming and firing.

4.1.3 Third Step—Weapon Fired. Rearward finger pressure against the trigger (22) pivots the sear lever (27) clear of the pawl on the firing pin (14). This pivoting movement of the sear lever also pulls down the firing pin block (3), to allow the firing pin to move foreward under the pressure of the firing pin spring (13). The tip of the firing pin hits the primer in the base of the cartridge seated in the weapon's chamber, and the piece is fired. Positions of the pistol's component parts after firing are shown in Figure 15. Recoil has overcome the pressure of the recoil spring (Part 35, Figure 3), and the slide has moved to the rear. In this moment, the empty cartridge case is extracted from the chamber and ejected from the weapon by the forward edge of the tip of the slide stop. When recoil is expended, the tension of the recoil spring moves the slide to the front. As it moves forward, the face of the bolt picks up a new round forced upward by pressure of the magazine follower spring on the follower, and the new round is seated in the chamber as the slide fully closes.

4.1.4 Fourth Step—Weapon After Firing Last Round. When the last round in a magazine loaded into the H&K Pistol P7M13 has been fired, the magazine follower (53). pushed upward by the magazine follower spring (55), reacts against the slide stop (26) to hold the slide (1) to the rear as shown in Figure 16. To return the pistol to an unloaded and uncocked position, pressure is applied to the cocking grip (38). As the cocking grip moves to the rear, the rocker (41) is rotated by the nose on the cocking lever (39). This pivots the slide stop down out of the position to hold back the slide. The slide then moves forward under pressure of the tensioned recoil spring (Part 35. Figure 3), and the firing pin (14) again is cocked by the sear lever.

Figure 13. First step of functioning, H&K Pistol P7M13 (left side view).

Cocking Leaver

Figure 14. Second step of functioning, H&K Pistol P7M13 (loaded and cocked).

9mm Pistol Parts

Figure 15. Third step of functioning, H&K Pistol P7M13 (pistol after firing).

M13 Sear Lever

Figure 16. Fourth step of functioning, H&K Pistol P7M13 (pistol after firing of last round).

Marksman M13

HECKLERS. KCCH GMBH

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