Hi I'm looking for said part for a lovely little 9422 XTR born in the spring of '89 =)

I was very kindly given her by my boss after his father who owned it sadly past away along with a Winchester shotgun I believe is a 101 probably of similar vintage.
Would you believe it took 5 months for the police to approve my licence?

Anyways. Brownells Sweden no longer carries a hammer extension for the 9422 so I'm wondering if another will fit.
The one for the regular 94 perhaps? Maybe shim it?