5.56 NATO Case Reference Model
thingiverse
This is a reference model of the 5.56 NATO cartridge case, limited in its current form but designed as a starting point for other projects. The exterior dimensions are based on a drawing available at Wikimedia's https://commons.wikimedia.org/wiki/File:5.56x45mm_NATO.jpg. The creator, Francis Flinch, has released this work under a CC BY 3.0 license via http://creativecommons.org/licenses/by/3.0. Interior dimensions were estimated from the image found through Google search at http://i.imgur.com/gIdQCq6.jpg.
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