Mach Sakai goes over thee G&G Airsoft TR16 SBR 308 MK1 AEG Rifle with ETU which is available in Japan. A short-barreled rifle, this has an M-ok Handguard and a 20mm Picatinny top rail. It is mainly made of alloy with the pistol grip and stock made of polymer. It has the G2 gearbox and the ETU.