Redmantoys does an unboxing and testing of the KJ Works KP-19 GBB pistol they have in stock. They show its competition-style features, such as a compensator, magwell, and adjustable fiber optic sights that can be swapped for a red dot optic. Also, the take note of the extended slide stop and confirms the pistol includes all expected accessories, cautioning viewers about sellers who might remove them.

During the test firing, the pistol initially failed to lock the slide back after the last shot, which the they quickly diagnosed and fixed as a stiff extended slide stop that needed to be worked out. Once resolved, the KP-19 demonstrated excellent and precise accuracy, grouping shots very tightly. The unit was confirmed to be fully functional and ready to be shipped to the customer.