70's Parabellum Mainspring guide

[Kiwi]

Hello - looking for some help
My 7.65 Parabellum mainspring guide - the head has broken off so mainspring does -- nothing

Asking how custom these are
Are most the same so I can swap in a new one
or is each model different?

Sarco do not list any
Gunpartcorp has guides, but I do not know if it would fit
Lugerman has them - ditto for fit

Thanks for advice