Why are Civil Guard Rifles also SA marked?
The Finnish Civil Guard was abolished under the treaty that ended the Continuation War with the Soviet Union. As such all Civil Guard rifles were turned over to Finnish Army stocks. It is also possible some of these rifles went into Army hands in 1941-44 and were so marked. A great many of the Finnish Civil Guard members became a part of the Finnish Army in this time frame, and their weapons in many cases went with them.