Original model 1855-1861 Musket bayonet, for Springfield and contract muskets, 21\" total length, pictured on the end of an 1861 model musket barrel, so it\'s not a trapdoor for sure. Locking ring moves smoothly. US is fairly crisp and not buffed down. the real deal!! Dark color patina and metal is mostly smooth, Can be cleaned up to shine. Old moderate pitting noted on locking ring. Guaranteed an original item. ask questions. shipping to lower 48 is a set price of $15.00. See my musket parts on here.