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Source: http://www.ndu.edu/nwc/nwcCLIPART/NWCclipart.html archive copy at the Wayback Machine

To the best of our knowledge, all images in the collection belong to the public domain and are thus available for use without obtaining permissions. However, we request that any substantial use of this collection--to include especially significant incorporation of its files on web sites--fully credit the National War College as a professional courtesy.

Chinese assault rifle Type 63