A spike bayonet, also known as a pigsticker in informal contexts, is a blade attachment for a firearm taking the form of a pointed spike rather than a knife. Most early musket bayonets were of this type. From around 1800 knife- or sword style bayonets began to appear, which could also be wielded by hand. In the early 20th century Spike Bayonets re-appeared, often folding or stowed under the barrel for compactness, such as on the French MAS-36, Russian SKS and German FG 42. The spike bayonet was also used on the Russian Mosin Nagant. The Lee-Enfield No.4 bayonet or Pig-Sticker, was a short spike (but fixed conventionally), and was unpopular due to its length.
A bayonet is a knife-, dagger-, sword-, or spike-shaped weapon designed to fit on, over or underneath the muzzle of a rifle barrel or similar weapon, effectively turning the gun into a spear. It is a close quarter battle combat or last-resort weapon.