The L9-A1 has a trigger safety consisting of a small, spring-loaded inner trigger housed in the wider, outer trigger that prevents trigger movement until it is depressed. In addition, a complete stroke of the trigger deactivates the internal striker and drop safeties.
When the pistol's chamber is loaded a pin extends out past the rear of the slide to provide a tactical indication of the pistol's condition while a small, semi-circular cutout in the barrel hood allows you to visually verify if there is a round in the chamber.
Lastly, the design features an internal safety lock. Using a special key (a pair of which are supplied with the pistol), you push in the cylinder behind the takedown lever and rotate it 45 degrees to the rear to lock the trigger and sear so as to prevent unauthorized firing.
The metal magazines feature extended base pads that increase capacity to 17 rounds, help ensure the magazine is completely seated during reloads, and prevent damage when ejected magazines land on a hard surface.
Breech locking is accomplished by the barrel hood moving up into, and bearing on the front edge of, the ejection port. When the pistol is fired, the barrel and slide recoil together a short distance until the barrel is cammed down, allowing the slide to continue rearward, extracting and ejecting the spent case. The captive recoil spring unit under the barrel then pulls the slide forward, stripping the next round from the magazine and chambering it. When the slide goes into battery, the barrel hood enters the ejection port, locking the two units together.