.52 caliber. 36" octagonal barrel with under lug. SN: NSN. Browned finish, brass furniture, hardwood half stock with pewter nose cap. Single screw commercial percussion lock, drum bolster, weak barrel marking that reads "WORKS PITTSBURG", almost certainly originally marked Enterprise Gunworks Pittsburg. Extended scroll triggerguard, shortened butt with butt and toe plates missing. Forend secured by an old raw hide wrap. A good example of an apparently "western used" rifle that has a completely honest look.