Found in Montana log ago tho trapdoor bayonet measures about 21" long with a blade of 18" overall and the retaiing lock has a frozen screw. No out of U.S. sales!!! Check my inventory for unusual and rare gun parts and other items. I  work  hard to find unusual items, and  try to keep the price affordable. My   descriptions are what I see,  good , bad, ugly, etc. Rarely do I miss something in listing. If you buy and item and are  not satisfied let me know immediately rather than leave negative feedback, we  can come to some arrangement that will make you happy. I describe items to the best of my ability, however, sometimes it’s a good guess, as I don’t take things apart and sell, I find huge quantities of stuff from other people, not described by them. I think that several photos and several measurements should work for you. If you’re not sure an item will fit, best to not buy. All listings have a return privilege.  Sometimes I travel for my job and are not here for three or four days. I ship as soon as I can but  not  always immediately. Please be patient. Thank you for having confidence in me  and  bidding.