Pheas Airsoft unboxes and reviews the Wellpro W10-2, an SMG that closely resembles a rattler. He highlights the key features, including its polymer build, metal QD points, ambidextrous controls, and folding stock. He says that he experienced some initial issues with the stock MOSFET and dual sector gear, requiring replacement and upgrades. Despite these setbacks, he was impressed with the gun's performance after repairs, particularly its range, rate of fire, and trigger response.