Thankfully I've got the wrench!
Everything in the box came in bits, so I'm not sure which bit you mean?
The pic is everything I've got in the box.
Thanks for the offer - if I haven't managed it by then, I'll take you up on it!
Two questions - which bit in the pic is the aftermarket barrel nut?
And could you direct me toward the right kind of adaptor please?
As you know, I'm shit at this stuff - but I'm learning! 😁