Liftable sight assembly and optic sighting device

A liftable sight assembly comprising:

• a base having a receiving space, a lifting channel and an operation hole formed therein, wherein the lifting channel extends downward from an upper surface of the base to communicate with the receiving space, and the operation hole extends from a lateral surface of the base to communicate with the receiving space;
• a sight block movably mounted in the receiving space, wherein the sight block comprises an aiming portion, the aiming portion extends to the upper surface of the base through the lifting channel, and the aiming portion is configured to protrude upward from the upper surface of the base or retract downward into the lifting channel with the sight block moving upward or downward;
• and
• an operation component mounted in the operation hole and extending to a position adjacent to the sight block, wherein the operation component is configured to cooperate with the sight block to move the sight block in the receiving space.