Pin locking mechanism

A crowd control barrier, comprising:

• a base rotatably secured to a frame by an outer tubular member and an inner tubular member nested within the outer tubular member, one of said outer tubular member and inner tabular member being secured to the base, and the other of the outer tubular member and inner tabular member being secured to the frame;
• one of the outer tubular member and inner tubular member defining a pair of substantially coaxial holes therein, the holes defining an axis substantially perpendicular to the outer tubular member;
• the other of the outer tubular member and inner tabular member defining a pair of partially circumferential slots, each slot being opposed to the other slot, tie slot further defining a pair of ends and a central portion, each end and the central portion defining a width, the ends having a wider width than the central portion;
• a pin passing through the holes defined within one tubular member and the slots of the other tubular member, the pin having a width and a thickness, the width being larger than the width of the central portion of the slots and smaller than the width of the ends of the slots, the thickness being smaller than the width of the central portion of the slots, the pin further having a first end and a second end;
• a handle having a scalloped inner edge disposed at the first end of the pin;
• the second end being structured to be biased away from the outer tubular member, thereby biasing the handle towards the outer tubular member;
• and
• means for resisting rotation of the handle when the handle abuts the outer tubular member.