Stun-gun maker Taser International has seen its profits virtually wiped out during the final three months of 2005.
Taser stun guns are used by police forces in Britain
The US firm said its fourth quarter income fell to $92,697 (£53,287), from $4.7m in the same period a year ago.
Taser has been fighting legal cases alleging that its weapons - used by police forces across the world - have caused accidental deaths.
The firm denies the allegations. Taser said its annual net income dropped to $1m in 2005, from $18.9m in 2004.
A formal investigation by the US Securities and Exchange Commission into claims about the safety of Taser's guns ended in December last year with a recommendation that no action be taken.