Streamlight Tailcap Assembly Protac 1Aa/Protac 2Aa. In order to replace the Tailcap Assembly of a Streamlight PT 1AA/PT 2AA Flashlight this Streamlight Tailcap Assembly is the spare part you're looking for. When you need Streamlight parts turn to us We stock a full selection of replacement parts for Streamlight lights. Whether you need to replace a part of your Streamlight flash light that's worn out or a piece that was damaged on the job we have the spare parts you need to get your Streamlight back into top condition. Features of Streamlight 880097 Tailcap Assembly for PT 1AA/PT 2AA Flashlights: Fits: PT 1AA/PT 2AA Flashlights Replacement Tailcap Assembly Package Contents: Streamlight Parts - Replacement Tailcap Assembly PT 1AA/PT 2AA Flashlights 880097 Tail cap Spring O-ring Streamlight 880097: Tailcap Assembly Protac 1Aa/Protac 2Aa