Need some information on this rifle

[stevebc]

In both pictures showing the muzzle end it looks to me that the barrel has been shortened. There should be about 1.75" from the front of the sight base to the muzzle, with the bayonet lugs in there. This rifle looks to be about .5" from the sight base to the muzzle face. If it was a No.1 it would be about that distance, but not a No.4, surely?