Where is the slide stop notch located on a semi-automatic pistol?

The slide stop notch is located on the slide of a semi-automatic pistol. This notch serves a critical function; it is designed to engage the slide stop lever when the slide is in its rearward position after the last round has been fired. This mechanism allows the user to know when the magazine is empty and requires a reload.

The placement of the slide stop notch on the slide itself ensures that the firearm can return to its battery position effectively once a new magazine is inserted. Understanding the role and location of the slide stop notch is essential for proper handling, operation, and troubleshooting of semi-automatic pistols. Recognizing its significance can enhance one's proficiency with semi-auto firearms.