RA-Tech sent us this sneak preview photo of a concept pistol that they will be releasing soon over 3 hours ago. Looking at the original file name of the file, this custom gun is based on a Glock 19 9mm pistol (6mm for airsoft purposes). Resorting to Google for similar pistols, we found the American Eagle Tribute Glock Pistol  which show a similar slide design but this is based on the .45 ACP Glock 21.