(b) As used in this section, "body armor" means a jacket, vest, or other similar apparel or device constructed to provide ballistic resistance to penetration and deformation and intended to protect the human torso against gunfire. The term may include, but is not limited to, apparel that incorporates inserts, or variations in construction of the ballistic panel over small areas of the torso, for the purpose of increasing the basic level of protection of the armor (whether ballistic or blunt trauma) on localized areas. Body armor may be constructed of Kevlar or other similar fabric and may be reinforced with other materials. Body armor may incorporate "threat" or "trauma" plates (which are inserts that fit into the vest that will stop more powerful rounds) or may, as "threat armor", incorporate hard panels.