Shadow 2 Optics Ready Slide Availability

I’m looking for an Optics ready slide for an S2 and it seems like the only places that have them are in Canada and most won’t ship to the US.

Am I not looking in the right place for this or are they basically impossible to get? Are there any aftermarket options available?

I’m looking for an Optics ready slide for an S2 and it seems like the only places that have them are in Canada and most won’t ship to the US.

Am I not looking in the right place for this or are they basically impossible to get? Are there any aftermarket options available?