Single-shot/repeating switching device of toy gun

A single-shot/repeating switching device of a toy gun, the toy gun comprising an outer casing, a bolt seat that is arranged, in a movable manner, to protrude from one side of the outer casing, a trigger link that is arranged on one side of the bolt seat, and a trigger section that is connected to the trigger link, the single-shot/repeating switching device mainly comprising:

• an adjustment hole, which is formed between the outer casing and the bolt seat;
• an adjustment seat, which is arranged in an interior of the bolt seat;
• a toothed rail, which is arranged on the adjustment seat;
• a pinion rod, which is rotatably arranged on the toothed rail in order to drive the adjustment seat to move by means of the toothed rail;
• an operating portion, which is arranged on one end of the pinion rod that is opposite to the toothed rail and is extended to outside of the adjustment hole for rotating the pinion rod;
• a coupling portion, which is formed on one side of the adjustment seat that is opposite to the toothed rail;
• and
• a movable arrestor, which is arranged on one side of the adjustment seat and is correspondingly joined by a joining part to the coupling portion, wherein the movable arrestor, when abutting a sidewall of the bolt seat, blocks the trigger link so as to set in a single-shot mode, and the movable arrestor, when separating from the bolt seat, allows the trigger link to pass, so as to set to a repeating mode.