Fred at BB makes good products. But, problem with his approach is you have to use HIS BARRELS WITH HIS FORENDS AND VICE VERSA. It is too constraining.
For my handguns I use standard TC barrels and for Rifles, exclusively custom (not BB) barrels. For both, I use VV hanger bars to fit my BB exhibition grade forend, or standard spacing forends that I float using washers. I have to extend the bar channel on BB forend to fit the longer VV rifle hanger bars.
BB solution maybe good, and at one point have been superior, but the fact that he dovetails the hanger bar to the barrel makes it too constraining and in fact inferior to other solutions for me. I like Fred, but I dont see ordering any barrels from him. I like VVs (Steve) removable hanger bars better.