Information On/Value of Springfield .22 Trainer M2 with Full M1903 Stock

This is a trainer, marked "US Springfield Armory Cal. .22 M2" with a SN of 91XX. It is in 80 to 90 percent condition overall. It has a full M1903 stock with leaf rear sight - it looks exactly like a regular .30 M1903. There is a P in a circle cartouche directly behind the trigger guard on the bottom of the stock. There are no other metal or stock markings visible on the exterior.

It has two screws on the right of the stock, midway down, with partial heads, i.e., only the outer quarter of the slot is cut on each side, while the center of the screw is not cut. There are corresponding blank screw heads/ends on the left side of the stock. On the left of the receiver are two sets of screws each in a slightly shallowed out cut. They look as if they were for a scope mount; no scope mount is present.

I have searched the internet, including images, and can't find any information on this variant beyond an article in GunTests where they had the exact rifle which they valued at '$3000'. This variant isn't listed in the Blue Book of Gun Values.

Does anyone have any information on how many of these trainers were produced in this configuration? Any idea of the value? Can anyone refer me to a website or reference book that discusses them?

Thanks for your help.

OK and thanks, will try CMP. I think it was in the range of a grand at least a decade ago in Connecticut.

More Info; No Photos

The bolt has the same serial number as the receiver (91XX); it is 'electropenciled', like the Swedish Mausers.

There is a trapdoor on the butt.

I am having trouble loading pictures; will try again later.

I have registered on CMP Forums and will post back here if I get more info.

Photos

Finally got these to upload.

Cartouche

There is a P in a circle on the underside of the stock, just behind the trigger guard. It is shown in one of the pictures attached. There are no other cartouches (even faint ones) that I can see anywhere on the stock.

The stampings on the receiver are as I noted in the original post. I don't see any other marks, including, proof marks in the metal that is not covered by wood. I am not going to take the stock off to search further.

I am guesstimating a weight in the range of eight pounds, this 'hefts' like a full-size '03 - it doesn't 'heft' like a 22. I don't have an '03 in '06 to compare it to, but the thought that someone expressed in an earlier post makes sense - that this is an M2 trainer that someone put into a full-size '03 stock.

That is part of my questions. Was this one of a small number of rifles made outside of regular government channels or was this a variant that was made by the government in limited numbers. So far I have been able to find only one other .22 that is similarly stocked, the one I referred to in my original post that was reviewed in Gun Tests.

Thanks

Thank you all for the wealth of information.

I registered at CMP Forums but haven't yet been 'activated' by an Admin, I figure they are taking Christmas week off. As soon as my account is activated I will post there and see if anyone has any more info.