Based on this product's specifications, here are some alternatives and similar models
Mouthpiece GESIPA Standard 17/32 for AccuBird/PowerBird/Taurus
Summary description:
Replacement mouthpiece by GESIPA with a 17/32-inch size designed for use with AccuBird, PowerBird and Taurus rivet tools. Serves as the interface between tool and fastener, ensuring correct seating and alignment of rivets. Suitable for workshop repairs and maintenance, helps maintain tool performance and prolong service life.