All .png assets are courtesy of this pack:

Crosshair Pack

by Kenney Vleugels (Kenney.nl)

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License (Creative Commons Zero, CC0)
http://creativecommons.org/publicdomain/zero/1.0/

You may use these assets in personal and commercial projects.
Credit (Kenney or www.kenney.nl) would be nice but is not mandatory.

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