Bren Pogo Stick: Real or Repro

[rob love]

I have seen a little drain hole on the bottom of the tube on some repros, just above the steel pintle insert and below the long slot. This one does not have a drain hole.

Paint is the darker British green, and underneath the top half there does not appear to be any primer, nor any patina where the paint is missing on the first 3". As well, there is a slight counterboring done on the upper tubing for the first 1/4".

I'll now ask for the opinions of the group. Did I buy a repro, or an extremely minty original? Overall it just appears too good to be true.