ailable against both threats 5.56 & 7.62. The ammunition against which you need the ballistic protection they are: 5.56 X 45 NATO SS 109 5.56 X 45 NATO M 193 7.62 X 51 NATO Ball 7.62 X 39 mm MSC 7.62 mm x 51 A.P. (W.C.) 7.62 x 54 API B32 Protection for tubes is possible but up to NIJ 0108.01 Level