<https://jsesurplus.com/product/guntec-ar15-ejection-port-dust-cover-assembly-gen-3-anodized-grey/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://jsesurplus.com/product/guntec-ar15-ejection-port-dust-cover-assembly-gen-3-anodized-grey/>