Abstract: Nowadays Lightweight armor is very important and used in many applications. Through this study, Penetration behavior was studied through two different types of armors. The first one produced was lightweight composite armor with reducing the number of layers to less than 25 layers of Kevlar using polyurethane rubber resin with high impact and tenacity properties, while the second produced type was a multilayer armor with less than 25 layers of aramid but without using resin Line-x coating in the back. The hand lay-up technique was used for the first type, while the second type was produced by stitching the back layers. Samples were tested for their properties and its ability to defeat 9 mm bullets in protection level IIIA according to NIJ standards. Afterwards the behavior of the small caliber into the two types by the post firing examination tests were studied, where the results resulted in (no penetration) for the two types and complete protection with very lightweight and very thin armor with different reaction of trauma.