"Sprat, if you think it is so easy do it".,
pirate it has been done by others who have the skill, As pointed out by arashi & tokarev. this comment was in no way a reflection of your project, only if it can be done by others then anyone who sends the time can do it.
I was waiting like others here for your project to take off. and I know you are working on it and perfecting it.
as far as me making one I cheated and bought a receiver, (it comes from a confiscated gun - police demilled )I am following your lead and milling out the trunnion.
"Pay no mind to Sprat".
congrats your kits came with front trunnion many didn't. folks should pay attention, I have built one of the few 70% fn fal receivers into a functional rifle, with hand tools ( find the post here at gunco), three sig p-228's in both steel and alum( find on roderus). I have hand carved ( hand tools)a DSA 0% ar-15 receiver, & I roll my own AK receivers( found on ak.net builders 1)
I don't recall any hand made projects from you Kaveman, I could be wrong and if you point out your HAND builds I will be the first to stand corrected
you see the art of personal destruction is a trait of members of the democratic party