"I bought 2 barrels from Midway USA and they are plagued with machine marks in the barrel and in the rifling. They were Midway's barrels. (AR-Stoner) I have spent some time trying to smooth up those 2 barrels."

Yup....Stoner barrels are made by Bear Creek. Nuff said.

"I can only suggest you avoid the cheap barrels that look like a bargain." Concur 100%