No Ridolpho, the barrel is correct because it is dated 10/16.
Lets get back to the markings, we have a 1916 action, 6MD overstamped on a older one.
A struck out unit number and a later one.
A S/N 46955 in incorrect font.
MA -
Lithgow post 1926
Early lithgow stamps and proofmarks ACP.
Viewers marks, VI ammo
10'16 barrel date.
Inspection stamps.
Receiver - Lithgow stamp and Mk.VII ammo
The 31355 is not the sight number, it should be under the arm. SC HV means it was upgraded for the Mk.VII ammo, bolt head is an Enfield one.
Now the variables, the assembly number on the sight should also be on the rear of the receiver.(31355)
The S/N should have been on both receiver and barrel, so which is correct? as the barrel was the primary part until 1925, I'D run with that, as the font for the receiver is incorrect, Why - no idea, but the original number should have been higher than the one shown.
What number is on the back of the bolt handle? We would need better and more photo's to place this one in it's correct bracket, the joys of not having it in your hands.