C stock?

Hello All!
I've recently picked up a C stock from a friend in a trade. It has no markings except a "J" in the mag cutoff slot. It does have another slot opposite for the bolt handle. It was glass bedded at one time and has an A3 handguard with it. Help with ID would be appreciated. I suspect it's a post war NRA match stock. Thanks!

Best Regards,
John

Could the "J" be part of an upside down "K"? Keystone (K) provided a many "M1903A1" stocks (full and scant grip) for the original manufacture of M1903A4 sniping rifles and also as replacements.
Does the cut for the bolt handle look factory made?

pictures would help

For reference here is an example of two different Keystone K's

https://www.milsurps.com/images/impo...ystoneK2-2.jpg

.

https://www.milsurps.com/images/impo.../CstockK-2.jpg

.

JR

some early C stocks have the letter J in the cutoff area.

Thanks for the quick replies. The stamp is definately a "J" in the cutoff area. Unfortunately, I can't locate any other stampings or marks. The slot for the bolt handle looks a bit rough. The stock and handguard are completely covered in a thin resin type clear coating. Maybe a varnish. I guess to protect it from the elements. It's bedded only in the reciever and trigger guard areas. I'll try to upload photos later.

Thanks for the pics Rotor. I now know for sure what stock is on my A4...

3 types of stocks were used for the A4, first in the first 1000 rifles, they used SA supplied early C stocks, and hand notched them for the handguard ring, and the bolt, second is the fat grip Keystone made with mill cuts for the bolt and handgurd ring, 3rd is the scantgrip with mill cuts