Quote Originally Posted by rancidtom View Post
As far as I am aware, yes. For confirmation of this check the Home Office Guide to Firearms Licensing:
https://www.gov.uk/government/upload...l_2016_v20.pdf
Refer to section 13.73 which defines component parts needing a certificate (and hence face to face or RFD transfer).

"Component parts
13.73 Component parts of firearms are also subject to certificate control, and may be authorised
if a shooter needs replacement or interchangeable parts.
13.74 The term “component part” may be held (according to case law) as including (i) the barrel,
chamber, cylinder, (ii) frame, body or receiver, (iii) breech, block, bolt or other mechanism
for containing the charge at the rear of the chamber (iv), any other part of the firearm upon
which the pressure caused by firing the weapon impinges directly. Magazines, sights and
furniture are not considered component parts. The 9th report of the Firearms Consultative
Committee provides additional information on this subject."
Very informative, thanks for posting this. Pardon the pun !!.