A butterfly knife (also known as a balisong) is a folding pocketknife with two handles that counter-rotate around a central tang. When closed, the blade is completely concealed inside the grooves of the handles. When opened, the two handles pivot outward to reveal the blade.
Butterfly knives (balisongs) are restricted or illegal in many areas primarily due to their rapid, single-handed deployment and concealability. Lawmakers often classify them alongside switchblades or gravity knives, linking them to historical associations with violent crime and Hollywood portrayals.
A butterfly knife (balisong) is designed for utility, martial arts, and flipping performance. Its rotating two-piece handle allows for rapid, one-handed opening and closing. The simple, rugged construction provides a highly secure lock, making it both a practical everyday carry (EDC) tool and a popular dexterity toy.
Technically, no. A butterfly knife is not a switchblade, though they are often lumped together under the same legal restrictions.
A Word Of Caution. As I said above, you need to remember that a butterfly knife is still a sharp bladed pocket knife, and you will cut yourself if you're not careful. The guaranteed way to avoid this is to start out with a butterfly trainer first.
In the hands of a trained user, the knife blade can be brought out to bear quickly using one hand. Manipulations, called "flipping", are performed for art or amusement. Blunt "trainer" versions of these knives are also available and can be used to practice tricks without the risk of injury.
Navy SEALs rely on a few specific standard-issue fixed blades, but they largely carry mission-dependent gear. Standard-issue knives include the Ontario MK3 Mod 0 dive knife and the Cold Steel SRK. For everyday carry and field operations, operators frequently choose rugged folding knives from premium brands.
Switchblades are illegal in certain parts of the U.S. due to cultural panic rather than inherent lethality. During the 1950s, popular media associated automatic knives with violent urban youth gangs. This moral panic led Congress to pass the Federal Switchblade Act in 1958, banning the interstate manufacture, sale, and transport of automatic knives.
In the high-end folding knife community, the original "Holy Trinity" refers to three legendary American makers who pioneered the modern premium tactical folder. Together, their designs set the gold standard for durability and precision.
A "Texas Toothpick" most commonly refers to a traditional, slim folding pocket knife with a long, slender clip-point blade and curved handle. Alternatively, in Southern culinary circles, it refers to an appetizer of crispy, deep-fried jalapeño and onion strips.
One of the primary reasons butterfly knives have remained popular throughout the centuries is their effectiveness as a self-defense tool. Due to the knife's rapid deployment mechanism - the ability to open the blade with a flick of the wrist - it can be an incredibly fast and discreet weapon.
At the state level, butterfly knives (balisongs) are completely illegal to own or carry in California, Hawaii, Washington, and New Mexico. In California, the law extends to banning any folding knife over 2 inches that opens automatically or via gravity.
Butterfly knives, also known by their preferred name balisongs or balis, at their core are just a blade and two moving handles.
Generally, it is legal to purchase a butterfly knife and have it shipped to one's home in California.
Butterfly knives (balisongs) are perfectly legal to own and carry in the vast majority of U.S. states. However, about 8 states impose strict restrictions, and total bans exist in Hawaii (currently being challenged) and California (possession is a misdemeanor in public, though legally grey in the privacy of your home).
The only knife federally banned across the U.S. is the ballistic knife (a spring-loaded knife that shoots its blade). All other restrictions—such as bans on switchblades, butterfly knives, and gravity knives—are determined entirely by individual state and local laws, which vary drastically.
For most kitchens, you only need three foundational knives to handle 95% of prep work: a Chef's Knife, a Paring Knife, and a Serrated (Bread) Knife. These three powerhouses can tackle anything from dicing onions and slicing crusty bread to peeling fruits and carving small meats.
Yes, Amazon sells various OTF (Out-The-Front) knives, including both automatic switchblades and manual box cutters. However, Amazon restricts the sale of automatic out-the-front switchblades to comply with federal regulations, which means listings are sometimes hidden or require careful navigation.
Its considered reasonable in the eyes of the law too: "It is an offence to carry any sharp or bladed instrument in a public place, with the exception of a folding pocket knife where the cutting edge of the blade is 7.62 cm (3 inches) or less.
John Wick famously wields a signature series of high-end, out-the-front (OTF) automatic knives in his movies. The specific knives vary depending on the film, transitioning from production models by Microtech Knives in the first three movies to a highly exclusive custom blade in the fourth.
The CIA doesn't issue a single, official knife to its personnel; instead, operatives typically carry versatile, non-metallic, or concealable blades suited for specific missions. Historic and publicly recognized blades range from the famous Cold Steel Kobun used during Operation Jawbreaker to highly covert non-detectable tools.
The legendary KA-BAR USMC Fighting/Utility Knife (Mark 2) is the most iconic blade associated with the United States Marine Corps. Officially adopted in 1942, it features a 7-inch clip point blade made of 1095 carbon steel and a stacked leather washer handle.
The sharpest knife in the world is made from obsidian (volcanic glass). Because it fractures at the molecular level, its edge can be as thin as 3 nanometers. This makes it up to 500 times sharper than a standard surgical steel scalpel.
The Bible generally portrays knives as utilitarian and sacrificial tools, and occasionally uses them as metaphors for spiritual discipline. Because ancient Israelites ate mostly bite-sized food, knives were rarely used at the dinner table.
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