not if you want a quality one.
I HIGHLY recommend doing NDS receivers though; the features you get for about $120 after transfer make any flat or 80% receiver pale in comparison. Stepped top rail, fully heat treated receiver, and much more exact than any homemade jig will get you.
Yep, I'm Ferret's new building partner and though I have never built off of a flat, I have to give NDS receivers