The black version of the Tokyo Marui AM.45 Vorpal GBB Pistol gets tested by Mach Sakai. This is a collaboration product between Tokyo Marui and the Sword Art Online Alternative Gun Gale Online". This is a modified version of the Marui Detonics GBB pistol designed under  the supervision of the original Author Keiichi Shigurezawa and the mechanical designer Koji Akimoto.