Breech Seal for Daisy (Winchester) 500, 600, 700, 800, 1000, etc. Hatsan changed the Breech Seal design and size without changing the part number so this will not fit 100% of the Hatsan guns. The result is 3 diffferent Breech Seals for the Turkish guns with the same part number. We only Stock one. It is 14mm outside diameter, 7.7 mm inside diameter, and 7.6 mm high. It will not fit the same Model guns made in Brazil or China.
