I have a BHW(Black Hole Weaponry) 16" 308win barrel. Barrel is 1.2" in front of the action threads and 1.08" at the muzzle. It is threaded at the muzzle 5/8X24. Heavy spiral fluted the full length. Appears to be unfired but not 100% for sure of this. Received in a trade of incomplete build. $200 shipped
also have a ER Shaw 300 Blackout 16" barrel. Stainless. Threaded 5/8x24. Supposed to be unfired. Received in a trade also. Suppose to be from the group buy at Gun Shack from a few years ago. Still in the gun shack tube. $125 shipped.
PM me your number and I can you you some pics if interested.