What's the name of this bayonet?

According to my understanding of playing with knives, this knife in the picture does not belong to the formal equipment of any unit. I have a "* * * knife" that was used to resist Japan, and its shape is very similar to this knife. From the design point of view, the blade is a double-edged integrated keel dagger, which should highlight the piercing ability, have finger protection and tap design at the end of the handle. From the design analysis alone, most of this knife should belong to "small factory" or folk design and manufacture, because the two designs of outstanding puncture ability and finger protection are contradictory, the use will definitely be greatly restricted, and many actions cannot be smoothly completed due to the influence of finger protection; The design with hand guard is generally not used for routine service or as a tool knife for survival and hunting. Hand guard design appeared in early folk knives, such as household knives. In addition, from the purchase point of view, I personally don't recommend buying this type of knife, which is beautiful and practical. It is suggested that the landlord can try the Kabbah series knives, one of which is affordable and the other is really good.