U.S. Air Force pilot survival Knife with straight and curved (belt cutter) blades. Writing on blade; Schrade Walden N.Y. U.S.A Stainless. Used to free pilot from tangled parachute shrouds and to whittle while you wait for extraction. Automatic blade works well, and overall condition is very good. $80.00 or trade for; 12 guage Rem. 870 barrel smoothbore with rifle sights, maybe an AR lower, or ?