Possible Clues:

• One makes sporting admission in revolutionary manner
• 'E lits, perhaps, where you pay on the way in
• Revolving mechanism for fans
• It lets one in
• Passes hat around where spectators pass
• Subway sight
• After payment one may let you in, at a push
• Ticket gate
• Revolver found at entrance to ground?
• Act with panache, in audition, producing revolver?