My experience: BSF Barrels May Experience Substantial Thermal Drift.

[Sticks]

"Our barrels reduce heat caused by firing"

I think I'd be more inclined to believe that a barrel could make my farts smell like roses.

It might be legit. MAC did a test on one, but I can not remember the name (was new on the scene). He did a mag dump (30) supressed and the chamber was touchable by bare finger. Stated that the accuracy was solid IIRC.