Replacing the gas tube?

[BPTactical]

No need to remove anything other than the roll pin that secures the gas tube and the gas tube itself.

^This-soak the gas block/tube junction with some bore cleaner or Kroil and let it set a while. When you get the pin out gently rotate/wiggle the tube out of the block. Push the tube into the upper a bit until it clears the block and retaining ring and remove.

[Byte Stryke]

it is important to note:
When you reinstall the gastube be sure to properly align the gastube inside of the receiver to the BCG Gas block BY HAND... and making sure that it is properly aligned.

[spleify]

Great information, thanks gentlemen. I will give it a go and see how I make out.

Thanks