Mach Sakai shows his Custom CAT AEG Airsoft97 shows, current as of March 2025. He discusses the customizations and modifications made to the airsoft gun, highlighting both external and internal changes. External modifications include a cat-themed flash hider, a modified grip for better handling, a smooth finish, a magazine release designed for fast changes, an angle adjustable hex wrench, and temperature tape. Internal modifications feature a smooth trigger with a light trigger pull and a brushless motor with DSG (Dual Sector Gear). The gun's performance is tested with different BB weights, and he adjusts the hop-up for optimal performance.