Frame of pistol

A frame of a pistol, comprising:

• a handgrip portion defining a magazine well which is configured for accommodating a magazine;
• an upper frame portion extending along a front-rear direction and connected to a top end of said handgrip portion, said upper frame portion including a barrel-receiving section distal from said handgrip portion, said barrel-receiving section including a bottom wall, two sidewalls extending upwardly and respectively from two opposite ends of said bottom wall, two through slots respectively formed in said sidewalls for receiving two opposite ends of a slide lock of a slide mechanism of the pistol, a compression spring retaining groove formed in said bottom wall between said through slots, and a spring plate retaining groove extending forwardly from a top end of said compression spring retaining groove, said through slots extending in a top-bottom direction transverse to the front-rear direction for permitting upward and downward movement of the two ends of the slide lock therein;
• and
• a trigger guard connected to and disposed between said handgrip portion and said upper frame portion, said trigger guard being located below said through slots.