How do I train tap, rack and roll and other gun manipulation skills with this SIRT Training Pistol?

You don't. The tool is not designed for that type of training simply because there is no need for any tool other than your real gun to train manipulation of the slide. To enhance the structural integrity of the SIRT Training Pistol and make it brick house tight, the slide cannot be racked. Other tools, such as Air Soft, are notorious for breaking when in use for training. Therefore, train skill sets, such as “tap, rack and roll”, with your real gun, always abiding by proper dry fire protocol.