Mach Sakai checks the new Tokyo Marui SG553+ AEG to see if it is an improvement over the old one. The SG553 Plus is an upgraded electric gun featuring the "PLUS System," a microcontroller-managed FET circuit that enhances safety and trigger response, particularly in semi-automatic fire, while also increasing durability and rigidity through reinforced resin construction; it boasts 20mm Picatinny rails for accessory mounting, a sleek black finish, flip-up sights, compatibility with 14mm reverse thread muzzle options, and a 40-round see-through magazine with a new follower for complete round firing.