FOUR 3D printed guns, a 3D printed replica rocket propelled grenade and 3D printed ammunition has been seized from a 17-year-old boy.

About 10.45am on November 16, police were alerted to the boy’s possession of a 3D printed firearm.

A later search of the boy’s home in Garran found a silver 3D printed replica 44 magnum revolver, a black and green 3D printed replica rocket propelled grenade, a black 3D printed replica 50 calibre revolver pistol, and 3D printed ammunition.

Police say the ammunition, guns and grenade have been seized.