The Remington M1867 was a rolling-block rifle, the first rifle using metallic cartridges to be adopted by the Norwegian and Swedish armies. Nominally it had a caliber of 4 decimal lines, but the actual caliber was 3.88 Norwegian decimal lines or 4.1 Swedish decimal lines (12.17 mm), and it fired a rimfire round with a 12.615 mm (.497 in) lead bullet. The 12.17 mm caliber was chosen because the Swedish army had approximately 30,000 new muzzle-loading M1860 and breech-loading M1864 rifles in 12.17 mm caliber in stock, rifles that were suitable for conversion to M1867 rolling-block rifles. With the exception of the first 10,000 rifles and 20,000 actions (for conversions of older rifles), which were made by Remington in the US, all Remington M1867 rifles and carbines were made under license in