The reform programme will be rolled out in four overlapping phases.
The coalition Government is rewriting the Arms Act, which has been in place since the 1980s.
Police are proposing to increase the firearms licence fee by almost 500 percent.
Administrative costs outweighed the money spent on taking dangerous guns out of circulation.
The scheme comes to an end tomorrow.
The pistols are traditionally used at the start of a running race.
A second three-month gun buyback scheme is taking place this year.
The cookies were baked in the shape of a person with holes in the body to symbolise the children killed by gun violence.
This comes less than a week before the US election.