Amatikulu,
A very interesting rifle. Enfield sent a lot of parts to Faz when they moved over to making other stuff at the same time as BSA Maltby & Faz started production in 1941. I once had an early Faz rifle that was assembled on a linished Trials rifle action, so the fact that yours has numerous Enfield marked bits is quite plausible. The pads are also of the early variety, & subtle differences in the 'lie' of the 4BA screws are typical of early production. 1941 mfr BSA'a Savage's & Maltby's are the same.....
The facing off of the screws on the bolt guideway looks a little rough, but it is so difficult to be precise over these things, especially on looking '2nd hand' (via photo's, albeit they are good). Are there any barrel indexing marks?
ATB