A spike bayonet

Bayonet

A bayonet is a knife, dagger, sword, or spike-shaped weapon designed to fit in, on, over or underneath the muzzle of a rifle, musket or similar weapon, effectively turning the gun into a spear...

, 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

Knife

A knife is a cutting tool with an exposed cutting edge or blade, hand-held or otherwise, with or without a handle. Knives were used at least two-and-a-half million years ago, as evidenced by the Oldowan tools...

. Most early musket

Musket

A musket is a muzzle-loaded, smooth bore long gun, fired from the shoulder. Muskets were designed for use by infantry. A soldier armed with a musket had the designation musketman or musketeer....

 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

MAS-36

The MAS Modèle 36 is a bolt-action rifle. It was adopted in 1936 by France, and was intended to replace the Berthier and Lebel series of service rifles. It was manufactured by MAS The MAS Modèle 36 is a bolt-action rifle. It was adopted in 1936 by France, and was intended to replace the Berthier...

, Russian SKS

SKS

The SKS is a Soviet semi-automatic rifle chambered for the 7.62x39mm round, designed in 1943 by Sergei Gavrilovich Simonov. SKS-45 is an acronym for Samozaryadnyj Karabin sistemy Simonova, 1945 Simonov system, 1945), or SKS 45. The Sks is a scaled down version of the PTRS-41 anti-tank rifle also...

 and German FG 42

FG 42

The FG 42 was a selective fire battle rifle produced in Nazi Germany during World War II...

. The spike bayonet was also used on the Russian Mosin Nagant. The Lee-Enfield

Lee-Enfield

The Lee-Enfield bolt-action, magazine-fed, repeating rifle was the main firearm used by the military forces of the British Empire and Commonwealth during the first half of the 20th century...

 No.4 bayonet or Pig-Sticker, was a short spike (but fixed conventionally), and was unpopular due to its length.

Spike Bayonets have not been popular with armies since the Second World War, apart from perhaps China

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

, who attached them to their AK-47

AK-47

The AK-47 is a selective-fire, gas-operated 7.62×39mm assault rifle, first developed in the Soviet Union by Mikhail Kalashnikov. It is officially known as Avtomat Kalashnikova . It is also known as a Kalashnikov, an "AK", or in Russian slang, Kalash.Design work on the AK-47 began in the last year...

 and SKS variants (Type 56 and Type 68

Type 68

Type 68 can refer to several national variants of the AK-47 rifle:*Chinese Type 68 rifle*North Korean Type 68 rifle*North Korean Type 68 pistol...

), till these rifles started to be replaced by the Type 81 assault rifle

Type 81 Assault Rifle

The Type 81 assault rifle was the principal automatic rifle used by the Chinese People's Liberation Army from the mid-1980s until 1995. It incorporates elements of the Dragunov Sniper Rifle, SKS, and AK series rifles in general looks...

, which has a knife bayonet, in the 1980s.