The Scandinavian rolling blocks include; the 1868 Remington Danish contract rifles, the Danish rifles made under patent agreement with Remington, the Norwegian Rifles, and the many variations of Swedish made military and civilian long guns. The Danish contract rifles are easily identified by their unique features. Most of the parts have a crown inspectors stamp, the rear barrel sight has an extra long ladder with a left side extension on the slider including an extra V notch for the volley sight system. There is a mating "front" sight mounted on the left side of the middle barrel band. The breech block has a firing pin retractor mounted in the top of the block.  The first contract rifles are marked Remington on the receiver tang while the rest were marked Kjobenhavns. A small unit disc was typically mounted in the right side of the butt stock. The Swede rifles are usually identified by the locking screws used to retain the receiver pins. On the military rifles the locking screws are found on the left side of the receiver adjacent to the individual pins much like Mauser locking screws.  Some of the civilian models have locking screws threaded into the opposite end of the pins (seen from the right side of the receiver). Some of the breech blocks have a long paddle type thumb piece. While we will be happy to assist you with information regarding the function of the Swede receivers as best we can, we do not have adequate detail regarding the many variations of these rifles needed for collectors of Original firearms. We would refer you to www.skydevaaben.com or Dutch@crufflecarp.org.