any one have a picture of the single trigger assembly thanks

Dangerous ground if you've never worked on one.

Destry

i have one here looks to me to be missing parts my parker book does not have any pictures

Probably depends on which type of single trigger this particular gun has? Miller, Infallible, Parker, other?

Not only could it be an aftermarket trigger, it could be one of at least two generations of original Parker trigger. I hope you find the pictures you seek. A picture and serial number of your gun will pin down which trigger you have, then maybe someone can provide a schematic for you.