Inland

[USGI]

Charlie, I noticed the hand guard too. I'm thinking it might have been changed in an attempt to make it "correct." Tried to post earlier, but Windows 10 wants to have me look at "little blue circles" - that gets old. Will restart the thing or maybe just go to an older computer and post again later. The bolt on my 476K Inland is marked "O.I. 3" and my data sheet is checked off as it being a rounded lug - but not sure and have a question mark there. It's kind of pointed, too! The barrel is an undated Inland. Have another Inland 755K and the barrel is dated 7-43. For some reason, I have a note about the 26 coil hammer spring being "opposite" wound. I'll check into that later. I knew about the two types of buttplates being used, but had been advised on the site earlier that the hammer spring had been changed out. - Bob

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[new2brass]

The bolt on my 476K Inland is marked "O.I. 3" and my data sheet is checked off as it being a rounded lug - but not sure and have a question mark there. It's kind of pointed, too!

Pointed vs rounded is a bit misleading. If you look at data sheet you will see that the most forward part of lug is what to look at. If it is at top of lug it is referred as rounded. However it can be pointy or rounded.
If the most forward part is I. The middle of the lug it is called pointed. These can be rounded looking.

Basically by lowering the point of contact it increased the dwell time of bolt opening. (It delays time for bolt to open)
This was done to decrease flash at breech. The gasses were allowed to get further down the barrel before unlocking bolt.
Later slides also were made to increase dwell.

The great thing here is the parts do not have to match. Early or late and the carbine functions just fine.