TO 6 Trigger

this Italian site has a very good way to compare parts as they have the part numbers if you tap on the part itself

they also have good service and there prices are fair compared to T.W. Chambers or my favorite Waffencenter Gotha

but for a search to compare part number it is a great site

https://www.omps2.it/en/firearm-spare-parts/diana-spare-parts.html

of course this is my go to site for part diagrams but the part numbers are not always there

https://enlacesarmasdeaire.blogspot.com/2012/06/diagramas-armas-de-aire.html

in any case 2 very good site for information and well worth flagging to find again