Yet another 1922 M2 for your consideration…

[Herschel]

makinster, I just found your post and as I collect the 1922 series gallery practice rifles I can provide some information that may be useful.
The serial number indicates the rifle was made in 1926 as a 1922M1.
The late type M2 bolt is of a type that went into production in about 1935. It should have the rifle sn engraved on the bottom.
The rear sight is a Lyman 48C. It is the type that was installed on the rifle when it was built.
The screw in aperture in the rear sight is a Merit Disc. The opening in it can be varied by turning the small indicator on it. This was not original but is a superior item that is still in production and is popular with shooters.
The front sight is an aftermarket item. The original front sight would be the same as the 1903 front sight.
The stock is an M2 Rifle stock. They were used on the M2 rifles that went into production in 1932.
The cartouche on the stock indicates rebuild.
When the 1922M1 rifles were upgraded with an M2 bolt, magazine and stock. An additional "1" was stamped after the model number and a "B" was added to the serial number. I have no explanation for additional B on the receiver. I have not seen that before.
The model 1907 sling appears to be original military. The steel frogs and link indicate WWII production. The earlier slings had these parts made of brass.

Here is how I would describe your rifle. It was built in 1926 as a 1922M1 "Issue type" rifle. Sometime in 1935 or later it went through rebuild at which time it had an M2 bolt and magazine installed and was put into the M2 stock. At that time or sometime later it was rebarreled with the 1935 dated barrel. As someone mentioned above, the rifle receiver and some other parts were originally blued. Some target shooter must have owned the rifle at sometime and added the Merit disc and the Lyman 17A XNB front sight.

The factory magazines for these rifles sell in the $100 to $125 price range. The magazines that work with the M2 bolt will have a small M2 stamped on the top left side. If the M2 is not there the magazine is for a 1922M1. The 1922M1 magazine is slightly shorter and will not come up as high into the receiver. 1922M1 magazines may work in your rifle or the bolt may over-ride the top round and not feed reliably.
FWIW

Herschel