Need 3d models of bullets and empty bullet shells

I am working on a fps project which if i can get it large enough to sell then i intend on doing so and am in need of empty shells for all ammunition types to properly get my gun animations in place and be ready to move on to bigger and better things with in this project all help is very much appreciated
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as cash in involved you'd be better off searching for open source/ free max files

or whip them up urself in sketchup

good luck