It's a 2k2, I think it's a cocker threaded feedneck, I am having trouble identifying the feedneck from any of the pictures on IOG website or elsewhere.
The top ring can be unscrewed from the feedneck but that seems to be about it, I think the feedneck itself is pressed in? Removing it would certainly be a one way event! I am presuming that any locking type feedneck screws onto the feedneck rather than into the body?
Any help with identifying would be appreciated.