It is also responsible for such non - crime - related subjects as the evaluation of arms and ammunition and the testing of bullet - resistant vests for the force . it is the sole repository for fired ammunition from crime cases where no weapon has been recovered for checking against all recovered arms and crime - related fired ammunition for any possible connections 该科亦是一个总储存库，专门储存在没有起出枪械的刑事案件中所检获的用过弹药，用来与所有起出的枪械和在刑事案件中所发射过的弹械核对，以找出关连。
