If you're gonna build it all from scratch make sure you get the right AR-10 pattern parts for everything. I believe DPMS style is the most popular but mismatch doesn't work. I'd say a bench vise is pretty critical for building uppers in my experience, AR-15 only though. Good luck with the shorty fireball maker. I shot a friend's chopped PTR in .308 and it's stupid fun. Makes the fabric/tarp roof on the shoot house bow out when you shoot in it. Impractical, yes. Fun, also yes.
If you're gonna build it all from scratch make sure you get the right AR-10 pattern parts for everything. I believe DPMS style is the most popular but mismatch doesn't work. I'd say a bench vise is pretty critical for building uppers in my experience, AR-15 only though. Good luck with the shorty fireball maker. I shot a friend's chopped PTR in .308 and it's stupid fun. Makes the fabric/tarp roof on the shoot house bow out when you shoot in it. Impractical, yes. Fun, also yes.