HUNTING accessories THE original from ANSCHÜTZ Here you will find our original ANSCHÜTZ accessories specially developed for hunting. You can also find our complete range of accessories in our current sales price list, which you can download here. Hunting | Barreled actions | Accessories Threaded bush wide - 1/2"-20 UNF item no.: 004556 Threaded bush for barrel thread 1/2" - 20 UNF, outer diameter 18 mm. Technical data Barrel - Thread:1/2" - 20 UNFMaterial:Steel