Help changing the outer barrel on my CZ Shadow 2.

[Dawnrazor]

Hi,
 I have a CZ Shadow 2 and the threaded outer barrel, for suppressors and tracer units, however, I can't seem to remove the inner barrel from my stock outer barrel in order to fit the threaded barrel, as there is a pin that runs through the hop up unit.
I've tried tapping the pin through gently as not to damage the hop up unit, but it just won't budge and I don't want to break it.
Is there a method I'm missing of doing this as it's supposedly a "drop in" part, but the pin stops the inner barrel and hop unit from being extracted?

Any help would be most grateful.
 

 

[Guest]

The little brass pin? Support the barrel unit and tap it out, you’ll be fine

 

[AK47frizzle]

Ye, you need to really hammer it hard. It's a pain in the ass. I hate the gun in general :>>

 

[sonofsammo]

I presume it's similar to the original Shadow. You need to twat it with some reasonable force.
The video starts at the point he's disassembled and has the hammer ready ?