Abstract: A handgun enables the adapter plate for mounting the dot-sight to be securely and easily assembled into the slide even without using a fastening member such as a screw. The handgun equips with the adapter plate and the slide for mounting the dot-sight with the improved assembly structure, wherein the adapter plate slides toward one side and is assembled into the slide, and then a projection lever restricts sliding of the adapter plate in an opposite direction such that the adapter plate is not unintendedly detached from the slide.

Abstract: A handgun enables the adapter plate for mounting the dot-sight to be securely and easily assembled into the slide even without using a fastening member such as a screw. The handgun equipes with the adapter plate and the slide for mounting the dot-sight with the improved assembly structure, wherein the adapter plate slides toward one side and is assembled into the slide, and then a projection lever restricts sliding of the adapter plate in an opposite direction such that the adapter plate is not unintendedly detached from the slide.

Abstract: A frame assembly for a pistol with a lock lever. The frame assembly includes a lower frame having a grip and an upper frame assembled on the lower frame and to a slide. The lower frame has: a mounting projection projecting upward to face the upper frame; and a lever mounting unit separated from the mounting projection and projecting upward. The upper frame has: a mounting groove into which the mounting projection is inserted to face the lower frame, and a lever hooking hole at one side of the mounting groove. The lever mounting unit has a lock lever having one end locked to be rotatable by a lock pin and the other end elastically supported to project upward. When the upper frame is assembled to the lower frame, the other end of the lock lever is inserted into the lever hooking hole and the upper frame is locked.

Abstract: Provided is a frame assembly for a pistol. The frame assembly includes a lower frame having a grip formed at a lower side and an upper frame that is assembled on the lower frame and is assembled to a slide. The lower frame has a mounting projection which has a predetermined length and projects upward to a predetermined height in a direction to face the upper frame. The upper frame has a mounting groove which has a predetermined depth and into which the mounting projection is inserted in a direction to face the lower frame. The lower frame and the upper frame are assembled together by a screw which is fastened to penetrate the mounting groove and the mounting projection in this order from an inner side of the upper frame.