shell casing identification please

[Woodland Detectors]

Can anyone educate us as to what these casing are used for?? NC 3in deep

 

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[Ramitt]

Simunitions. Basically a paintball round use for police training.
http://www.nevesuniforms.com/productdetail.asp?groupnumber=99

 

[Michelle]

Simunitions. Basically a paintball round use for police training.
http://www.nevesuniforms.com/productdetail.asp?groupnumber=99

 

[detector de metales]

Ahhh paintball for cops..
Good ID!

J2