Thanks for the tips regarding handguard and stock fit. I should be able to take a look at them tomorrow.
- The crown is perfect and threaded straight. No bullet strikes on the flash suppressor.
- Regarding "modern flim flam". The stock is a modded USGI, nothing new there. This rifle is useless to me without an optic as my eyes are not getting more suitable to longer range shooting as I get older. I've already tried an ARMS 18 scope mount but the reciever side geometry on this rifle means it required extensive fitting. I wouldn't be surprised if harmonics were the issue, but Vltor has a very good reputation so I won't chuck the rail in the garbage just yet.
- The trigger group requires a moderate level of force to lock and open.
I'm not interested in the Blackfeather at all. I really don't like the way they do business.
Thanks to all, I'll report my finding as soon as I can.