I recently inherited a beautiful 5100 from my Grandpa, only problem is that I don't really know much about it and was hoping you guys could help me out. I have been doing some research but can't find out much. The shotgun has U.S. Property stamped on the left side of the stock and my mother told me that my Grandfather was stationed in Alaska during WWII. But I can't find anything about it being used in the service. On the right side of the frame there are the markings (Springfield; J. Stevens Arms Company; Chicopee Falls, Mass USA). On the right side is just the 5100. It is a 12 GA. If anyone knows anything about this firearm let me know because I am almost completely in the dark about it right now. Thanks