Question about 30 round clips and bayonet lugs on Carbines in WW2

[browningautorifle]

I agree that the sling doesn't seem to even be fixed in the proper place, but stranger things. He also doesn't have a mag on and being a tech type those photos were more for fun on their part then anything. BUT...if you go to War Baby, in pic 185 on page 225 you see Larry Ruth holding a carbine stated to be model 4, M1 E3 (M1A3) with that exact bayonet lug. In the Springfield Armory. If I am correct, Howa made them for the J.D.F. ? And they also were a cross pinned barrel mounted lug? Then in pic 272 on page 286, type C band the T2 has a short lug but it's on an extended band and this isn't it. In any case the book states work order for Jul 7 1945 directed bands be replaced with completion date of 1 Jan 46. The lug we know today was approved on 10 May 1944.