Owner’s Manual 2020

3. Release the slide by pulling rearward on the slide to disengage the

slide stop and allow the slide to move forward and chamber a

cartridge. You can also press down on the slide stop to allow the slide

to move forward and chamber a cartridge. When the slide closes, the

pistol is loaded and ready to fire. You may now continue firing (Figure

22-23).

If firing is no longer imminent and you are finished shooting, remove the

magazine and pull the slide to the rear to eject the chambered round.

Inspect the magazine well and chamber to ensure no ammunition remains

in the pistol and allow the slide to return to the forward position.

8. FUNCTION OF THE FN 503

The FN 503 is a semi-automatic, locked-breach pistol. With the chamber

and magazine loaded, the pistol will fire a single shot each time the trigger

is pulled until the magazine and chamber are empty. The slide will remain

locked to the rear after the last cartridge is fired.

8.1 FIRING CYCLE

When the trigger is pulled the striker block and trigger safety are

disconnected and the striker is released to move forward and strike the

primer of the loaded cartridge, firing the pistol. The energy generated from

the firing of the cartridge moves the slide and barrel rearward, the barrel is

FIGURE 22 FIGURE 23