yes this is a very good barrel for the vibe.
A barrel does not have parts per se. You can have sights (front and rear) on a barrel, but the barrel is usually one piece, sometimes two.
id go Freak jr. you have the sizing options that will help with accuracy and efficiency, the MF isn't all that great IMO, you run more of a risk of damaging the threads by not having them be metal. also look into the deadly wind fibur (yes that's how it is spelled) it is a carbon fiber barrel that uses the freak inserts, so you basically have a carbon fiber freak barrel, and it is amazing (i own one) it basically feels like playing without a barrel on your marker
Barrel, stock,
Read the codex
Barrel, Trigger, Trigger guard, hammer/striker, front sight, rear sight, chamber/cylinder, frame, grip.
"gunpartscorp" - Numrich gun parts. Best bet for any gun parts or schematics.
Action, stock, barrel
Lock, stock, barrel
Lock stock and barrel
LaRue Tactical specializes in the manufacturing of custom parts for automatic and semi-automatic rifles. They have a wide range of product such as scopes and rifle mounts.
barrel, stock, action.
Frame, barrel and cylinder