I had a very specific barrel that I was looking for, and it was ONLY BCA that offered it - 16" carbine gas 6.5 Grendel barrel. And it's a shooter, for sure. Happy with it.
I talked with the owner of BCA a few years ago at SHOT Show, and asked him how he does it - they have a Lifetime Guarantee on their barrels. He used to own an auto parts reproduction plant. He owns all his buildings and manufacturing equipment. Owes nobody, nothing is leased, rented, etc. When the Chinese started making auto parts - he decided to turn towards firearms, and bought the few other peices of equipment he'd need... and OFF TO THE RACES.
That's how they have low prices on good stuff, and offer a lifetime on it all - if one gets through that didn't meet spec, they have no problem replacing it. No questions asked.