Yes it works for ranch edition in 762x39 - Magpul Industries Hunter American Stock - Ruger American SA STANAG Magazine Well

I was worried about getting this due to the lack of reviews about the ranch edition in 762x39 . But I ended doing it anyway. Works well with the AR magazine that’s meant for 762x39. I chose the 5 rounders and 10 round magazines. Regular pmags for 223/556 fit and chamber the round but I don’t like how the rounds don’t constantly chamber.