Military being the armed force, a lot of weapons could be obtained from the military surplus store. Military surplus weapons offer you high quality products and as a collectible and utility, these weapons are great tools.
All the military weapons are not available for the common public to purchase and use. Certain guns, knives, swords etc are available in surplus stores. To find reputed military surplus search over the internet.
Availability of weapons depends on the military and civil law of the country. In the US certain weapons are available for the common public to use and law permits them to use even guns in a limited perspective.
Bayonets are meant to fix on the guns. A common man may not find a use for the bayonet as it is meant to be, but these long, hard and sharp knives can be used for several other uses. In fact bayonets are multipurpose knives.
Bayonets can be used for cutting hard materials or can be used as a tool in cooking. When you go on a picnic, camping or hunting, these bayonets can be taken along as they will be a great help for various uses. Military surplus stores may offer several bayonet types.