The Tippmann Stud Response, made for the A5 Response. This is the piece that goes above the piston on your response trigger. Shown here with the FA-07 o-ring installed. This o-ring is not included, but can be purchased separately (search for FA-07). Always good to have spares handy!
This product is used in the following guns: A5 Response.
The Tippmann Part Number for this product is 02-81.