In reply to the barrel, it's a Ramrod - I forget the manufacturer.
I have one in Autococker thread and I even have the specially-made longer barrel plug that came with them. As barrels, they're pretty worthless, IMO.
The idea was that you would get a long low-contact control surface with the rods to 'guide' the paintball after it accelerated to speed and that if you ever broke a ball you wouldn't need to squeegee it. Good idea, I suppose, but it's pretty obvious that it doesn't really work as intended. They've now become nothing more than a curiosity. It's a 4" stainless unported barrel with some cool (and heavy) junk tacked onto the end of it. It works but it has all the performance characteristics of any other 4" unported barrel.
*placeholder for when I can get pictures*
Before: "You're playing with WHAT?"
After: "Crap! It's that guy with the pump!"