The EMG Velcro Patch Series is made by Black Owl Gear in collaboration with Evike Manufacturing Group. It consists of various Velcro-backed patches of airsoft guns, with designs licensed from manufacturers including Salient Arms, Knight’s Armament, and Sharps Bros. In addition to all the guns, this series also includes a patch of the SAI Akimbo Panda, because why not?
You can purchase them at http://www.blackowlgear.com/default/parts-and-accessories/patches.html?&limit=24