GOLDEN, Colo. (AP) _ A man accused of selling a handgun that the two teen-agers used in the Columbine High School massacre was charged today with an additional count _ possession of a sawed-off shotgun.

Mark Manes, 22, who was allowed to remain free on bond, also has been charged with selling the TEC-DC9 9 mm pistol that Eric Harris and Dylan Klebold used to kill 12 students and one teacher.

Harris and Klebold ended the April 20 rampage by killing themselves.

The latest charge against Manes is a felony that can carry an additional 3 to 6 years in prison if he is convicted. The TEC-9 charge carries a sentence of up to 12 years if the judge finds extraordinary aggravating circumstances.

Manes' lawyer, Bob Ransome, said his client has been singled out as a scapegoat for the shootings.

Ransome said the additional charges were unnecessary and ``it seems to be a little bit of overkill to me.''