picatinny rail for stoeger?

[Blowsh*tup]

hey guys, i have a stoeger 12g sidexside cough gun and i want to add a flashlight and maybe a sight like the double defence,

im usually good at finding stuff online but what i want to know is who sells a picatinny rail for my side by side? i am not having any luck finding it myself

any suggestion other then go buy a double defence would be greatly appreciated.

thanks