According to ASG Olsztyn, the CYMA CM.102 which is a clone of the Tokyo Marui SGR-12 AES, is a nightmare for technicians to service in this review. This features a new gearbox and triple HOP-up system. Its realistic design includes a shotgun muzzle choke, which adds to the authentic look and sound. The monolithic upper receiver provides enhanced durability and stability. The handguard features M-LOK attachment points and Picatinny rails for customization.