Update: It looks like BRP Guns will now ship to the UK if it doesn't infringe the HMRC definition of a 'component part':
Shipping & Returns
Actual HMRC doc here:
https://www.gov.uk/government/upload...ition-2016.pdf
I don't *think* a Sten barrel nut would be covered by this, but could anyone give me a more informed opinion?
Although what the total cost would be including shipping and import duties would be another matter...
Cheers,
Mark