Mach Sakai checks out the Tanaka S&W M500ES gas gun, specifically the Model 500 Version 2. He lists the gun's pricing, specifications, and various design features, including its large cylinder, adjustable hop-up, and robust sights. The reviewer demonstrates the smooth trigger pull and the safety mechanism, as well as the simple process for loading gas and BBs. Performance tests reveal consistent muzzle velocities and efficient gas consumption, allowing for hundreds of shots per charge. The gun's quiet operation and suitability for target shooting competitions like Steel Challenge are also highlighted and he praises its powerful appearance and quiet performance.