Gun clamp easy to be dismounted and adjusted in position and a gun mounted light thereon

A gun clamp, comprising a base and a slider;

• one side of the base is provided with a clamping assembly;
• another side of the base opposite to the side of the base provided with the clamping assembly is provided with a first sliding groove;
• a side wall of the base is provided with a second sliding groove;
• the slider is cooperative with and insertable into the first sliding groove or the second sliding groove;
• a main shaft is provided in the base connecting the first sliding groove and the second sliding groove;
• an end of the main shaft proximal to the first sliding groove is provided with a first locking piece;
• an end of the main shaft proximal to the second sliding groove is provided with a second locking piece;
• an end of the main shaft distal from the second locking piece is connected with a switch;
• the switch is positionally limited at another side wall of the base distal from the second sliding groove.