Hi. I am reading in the Norwegian bock "Norwegian militeryguns after 1867" that on 24 of september 1869 the Norwegian army comando formed a rifelcomitiom to compere the M/1867 Remington R.B. to new rifels from Krag and Larsen. 10 Larsen guns and 5 Krag guns was used and the Krag guns was made on K.V. And your gun is licly a devolepment of these guns, thre is a picture of the 4"Krag Magasingevær sn.22 and its made in 1869. hope this helped you.