Mach Sakai recently reviewed the new Tokyo Marui Glock 17 Gen 5 MOS GBB Pistol. The review included a comparison with the Glock 19, focusing on aspects such as magazine compatibility and internals. The Glock 17 Gen5 Tokyo Marui package was also examined, which included the instructions, overall length, weight, and a comparison between old and new magazines. The review also covered the short recoil, front and rear sights, slide pull, hop adjustment dial, engraving, light attachment, safety device, trigger pull, grip, and back strap. An interesting observation was whether the magazine falls due to its own weight. The review also included a demonstration of normal disassembly, assembly, gas injection, and inserting BB bullets. Finally, a live firing of the Glock 17Gen5 was conducted and compared with the G19.