It is a nylon dummy round which simulates the Type 3 Malfunction, exactly as we would experience it in reality, under live fire training conditions.
The Type3MalfunctionRound™ is made of a nylon plastic resin which is designed to protect the internal steel parts of the firearm from being damaged. The Type3MalfunctionRound™ takes the beating of the slide instead of the gun. Each Type3MalfunctionRound™ will last roughly 500 shots before needing to be replaced. With too much wear, the Type3MalfunctionRound™ can stay stuck in the barrel when stripping the magazine from the firearm. While a training nuisance, a stuck Type3MalfunctionRound™ is not dangerous. Simply discard the disposable round and use a new one.