State police report opposes expanding gun database
Ballistics system has flaws, crime lab director says
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“The database – which has cost $2.1 million over the past three years – has
generated four matches, and in each case, police already had the gun they were
trying to trace, according to the report.”

http://www.sunspot.net/news/yahoo/bal-md.gun07nov07,0,1707399.story