N0.5 Mk.1 `Jungle Carbine` Question?

Just bought a ROF (F) No.5 Mk.1 10/46 Ser.# X8XXX
Rifle is in beautiful shape, almost excellent I would say. All matching #`s on forend, mag.,
bolt & receiver. Crown over BNP on left side of barrel with tons info etc. & on left side of receiver back of the top handguard. `England` and broad arrow on left wrist.
Marked with `F` on all parts, except??
The front sight blade is marked `F` broad arrow .045, but the flash-hider is marked M47C.
Absolutely everything else is `F` Fazakerley marked.
Why would this rifle have a BSA flash-hider installed?
Would she be a rebuild or FTR? `not marked FTR anywhere`
Would a previous owner have installed it?
Your help please!!

Later production Fazakerlys very commonly have BSA flash-hiders, and sometimes other parts. These can be found on new/unused condition rifles. BSA was clearly supplying Faz with parts from their own over-production.

T/Box has it in one. BSA were a private contracting company that lived or died (as indeed they did.....) on sales. And the more they sold, the better and the more of their production they sold to the loss making Government factories, the better. Any over production went into the 'pool' and was utilised by whoever needed it for production or spare parts

Thanks Guys. You`re the experts, certainly not me!!
I just love Lee Enfields.
Phil.