PlaSSo does some modifications of a AR16 Mark 8 gel ball blaster and does a conversion to make it shoot airsoft BBs. He first goes over the rifle's features, including its ambidextrous controls, adjustable brace, and split gearbox. He demonstrates its functions with gel balls, highlighting its responsive trigger and burst firing capabilities. From there he details the BB conversion process, involving barrel and hop-up modifications, and does a BB firing test, noting some feeding issues. The reviewer recommends the rifle for gel ball enthusiasts and those with DIY skills for BB conversion.