This is a knife bayonet originally manufactured as a Model 1938 "Folding" Knife Bayonet, then as the Model 1938 "Fixed-Folding" Knife Bayonet. and now it its final form where is was newly manufactured as a fixed blade knife from its origin. The first variant was the true folding original; the second was the folding model where the folding mechanism was made inoperative while retaining the slot in the hilt where the blade folds into; the third was manufactured entirely as a fixed bayonet and does not retain the slot. The later two types utilized a crossguard with a lower quillon.