Odd Mosin Nagant Stock.

[SSG_Lord]

The two stamps on the butt plate are Finnish Civil Guard acceptance proofs used on the M24, M28 and M28/30 so it's likely a Finnish stock. Looking at different CG rifle models your rifle appears to match the stock used on the M24RV carbine, a shortened version of the M24 rifle meant for cavalry use. M24RV's are extremely uncommon in the U.S. with only 3-4 reported. I've included a few pictures of one from Vic Thomas's site, Mosinnagant.net which is currently down but viewable using waybackmachine.com. Can't really help with the Sturgis stamp though, it could be some sort of property or inventory stamp from a museum or business that owned it previously here in the U.S.


Here is Vic's write up concerning the M24RV
NON STANDARD m/24 CARBINE

There is a carbine version of the model 24 rifle that is not well known and is not listed in Finnish records as an officially accepted version. This carbine appears to be the civil guards answer to the army's adoption of the m/27 rv carbine in 1935. Some reports out of Finland while doing research for the article and in personal notes over the years indicate that approximately 600 rifles were taken into the Civil Guards workshops and shortened to provide a short carbine length weapon for troops who would require it such as communication or mounted troops and crew served weapons. These m/24 carbines are extremely scarce, more so than the rare army version m/27rv. The rifle is a standard production m/24 that has been shortened to the same approximate length of the m/27rv carbine. The barrel has been recrowned and turned to the same diameter as a m/28 rifle. The front sight was then replaced with a m/28 front sight assembly and blade and soldered in place. A new short rear handguard was fabricated from the standard m/24 handguard to complete the rifle. With so few made and even fewer making it to the US, these rare carbines are without a doubt the crown jewel in any Finnish rifle collection. Just a handful are reported and almost all of these coming in the importation of the Finnish rifles into the US in the late 1950's and even more so in the large importation of the 1980's and 90's. The author is aware of only 2 other rifles in private collections in the US and all three including the authors carbine were obtained as m/27's from Century International Arms in the late 1980's.