Some advice on a bolt and barrel

[woodysan]

Just wondering if any one can shed some light on this barrel kit and bolt (or what looks to be one)

What sort of thread is it, are they still being used, are they in demand - if so how much would one sell for?

http://i.imgur.com/SUdyDSw.jpg (Barrel)

http://i.imgur.com/Gsr8q6q.jpg (Bolt)

Thanks for looking!

 

[spangley_special]

Freak barrel, at a guess I'd say ion thread

Shocker bolt kit, at a guess I kind of want to say its an evolve kit.