Where can I get a scope mount for S410 bulllpup?

Hello all-

I am working on converting my S410sl xtra FAC w/ bigger barrel/shround to a bullpup. Stock is at %50 not with a few booboo for be a novice and first time attempting to make a stock.

Trigger part I can figure make out, but for the scope mount… i’m lost and do not know who/where to make/get one.

thanks,