Massachusetts Treasurer Steve Grossman has faced off against the head of the state's gun rights lobby in a debate meant to highlight what Grossman says is Attorney General Martha Coakley's failure to embrace tougher gun control.


Grossman and Gun Owners Action League of Massachusetts Executive Director Jim Wallace presented their views during the exchange Thursday on the steps of the Statehouse.


Grossman and Coakley are both running for the Democratic nomination for governor.


Coakley's campaign had indicated she wouldn't attend the event.


Grossman faulted Coakley for not supporting a proposal backed by Gov. Deval Patrick to limit gun buyers to the purchase of one firearm per month.


Coakley's campaign manager called the debate a ``stunt'' and said Coakley supports closing the gun show loophole, banning assault weapons and requiring background checks for gun purchases.