I'll give you guys a call tomorrow. I'm sure it's just the extractor, spring, buffer. I took the ones off my friends R15 and tried it today and it fired fine for about 50 rounds.
I went with the DTI because that's my old stomping grounds at Ft Bragg and my family is all over coastal NC(Clarkton, Elizabethtown and Lumberton) I'm sure you see tons
of Tarts there.