Handguard quick dismantling structure of toy gun

A toy gun handguard quick dismantling structure, mainly comprising:

• a barrel portion, which comprises a barrel pivoting portion;
• a handguard portion, which is arranged on the barrel portion, the handguard portion comprising a handguard pivoting portion;
• a barrel retaining piece, which has an end comprising a barrel connecting portion pivotally mounted to the barrel pivoting portion, and comprises a barrel coupling portion at a location distant from the barrel connecting portion;
• and
• a handguard retaining piece, which has an end comprising a handguard connecting portion pivotally mounted to the handguard pivoting portion and an opposite end comprising a handguard coupling portion, wherein the handguard retaining piece is structured such that when the handguard portion and the barrel portion are combined, the handguard coupling portion is set in retaining engagement with and coupled to the barrel coupling portion, and when the handguard portion and the barrel portion are separated, the handguard coupling portion disengages from the barrel coupling portion, and wherein a location of coupling engagement between the barrel coupling portion and the handguard coupling portion is higher than a level height of the barrel connecting portion and the handguard connecting portion.