5.45 x 39

[wwIIBuff]

I just ordered an upper from olympic arms in 5.45 x 39. The guy on the line told me it would be 90 days minimum. I think I am going to go crazy waiting.

[thbirdrock]

At least they took the order, I'm tying to buy advertised Tapco product that hasn't even been released for sale :eek:

whats the twist rate on the barrel ?