Mark, from the outside it looks like the control bore only goes an inch or two, but inside the control bore is about 6 inches.
We were sponsored with these last year. I had a bunch. All i can say to all you guys getting them is keep them clean, never leave paint in your barrel longer than a game. Swab it really well any time you come off the field after breaking paint. Also, avoid playing in sand if at all possible. These barrels are incredible strong, but the interior finish gets fuzzy if you don't baby it. They shoot great until they start wearing out, which is quick if you don't keep 'em clean.
I really like CP barrels. Good advice. I think someone told me they even use the same thread between front and back as the freak, but I never have checked.
I like Ti Longbows even better, but they are expensive at retail price. If budget matters, they wouldn't be an option.