774 - (service) screw fixing the stock with a convex head with a cross recess for Hatsan piston air rifles: with a main metal or gas spring. For MOD 55S-135, DOMINATOR 200, PROXIMA, TORPEDO 100X, 105X, 150, 155.
480 - (service) 147 mm x 26 mm piston with 27 mm piston seal for Hatsan Arms spring-loaded (piston) breakable airguns with shortened compression chamber. For MOD 33, MOD 35S rifles, in caliber .177 (4.5 mm)...
471 - (service) piston seal for Hatsan spring (piston) airguns. For: MOD 33, MOD 35S, MOD 55, MOD 60, MOD 70, MOD 75, MOD 80, MOD 85, MOD 88 MOD 90, MOD 95, MOD 99. In calibers: .177 (4.5 mm), .22 ( 5.5 mm) and .25 (6.35 mm).
