A 1921 NM rifle would have looked just like a standard service rifle with a full length straight stock, hand guard, front bayonet band, and a rear barrel sight. The receiver sight was probably added when it was put in the 22 caliber stock. The polished bolt, polished rails, honed camming surfaces on the bolt and receiver, and star gauge number on the barrel would distinguish regular issue from NM. Some .30 caliber rifles were indeed built on M1922 stocks, but, these stocks would have had re-inforcing bolts.
I neglected to mention in my post above that the slightly rounded cutout in the forward
part of the magazine well on the NRA Stock used on the 22 cal rifles is to allow for insertion of the .22 cal magazine. It is plainly visible in the photos of the stock posted above.
Your rear sight, a Lyman 48, does not go to 125 yards. With a 24" barrel the "125" is the number of MOA that the sight moves and I do not believe that the entire 125 is usable.
FWIW
It tops out at about the 87 mark.
Likely original barrel. "A V" stamp indicates an Avis barrel, finished by S.A., which was done on many NM rifles post WWI. Stock likely replaced...My $.02...
I'm going to put it back in a correct stock so I was wondering if the M1922 stock is worth anything to anyone. It's a very nice piece of wood with only 2 very small dings but it has had the pistol grip cap added and the cutout for the cut-off switch has been hacked into the side. Is it repairable or worth anything?
For example, 03 with a heavy barrel and M2 stock. Taken in 1940 as potential sniper rifle variant by the USMC.
A lot of civilian owners built them this way too. I found mentions of that as well.
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