Body Armor Safety Initiative Summit Information > Answers
Below is the question and answer you have chosen to view. If you are satisfied with the
answer to this question you may use the left hand menu to navigate elsewhere on the site.
Related questions have been provided at the bottom of the page if you did not find the
answer you are looking for. If you still need more information, feel free to use the
'' link below to ask us directly.
Is used armor's ability to prevent excessive backface signature as important as its ability to prevent bullet penetration?
NIJ recognized the importance of armor's ability to prevent bullet penetration as well as reduce blunt trauma to an acceptable level. Prior research has determined the acceptable limits for blunt trauma, and the NIJ standard does not allow more than 44 mm of deformation for an armor model to be NIJ-compliant. Used body armor should provide the same level of assurance.