Best Automatic Knives in 2021

The SWMP4LS 8.6in Stainless Steel Assisted Opening Knife, designed by Smith & Wesson, is a well-constructed knife, designed in all black. The blade is made from a strong and highly durable 4034 Black Oxide S.S, with a partially serrated lower edge for multi-purpose use. This is combined with a handle constructed from aluminum and an additional rubber inlay for safe and secure use.

The sleek design features a glass breaker at the end of the knife handle and thumb plate, so you are always prepared. The security of the knife is further enhanced with a liner and safety lock, for added non-slip safety. The blade is simple to release with the help of M.A.G.I.C assisted opening, and the finger actuator. For a strong, durable, and good all-round knife, the SWMP4LS 8.6in Stainless Steel Assisted Opening Knife is an excellent choice. Make sure you also check out our list of the top tactical knives for more great items like this. 

Designed by Benchmade, the 3300 Infidel OTF Knife is a very interesting automatic knife, offering many outstanding features and excellent mechanisms for easy and safe use. Well-designed for tactical use, the knife is classed as a double-action OTF automatic. The 3300 Infidel OTF Knife is primarily designed for right-handed users, with an all-black handle, bar the release catch which is highlighted in grey.

Constructed from D2 steel, the blade is double edged with a spear-point, while the handle is made from sturdy aluminum. The automatic knife is easily released via the sliding mechanism on the handle face. The handle itself is designed to be comfortable to hold, and non-slip for safety, thanks to the unique and easy to grip ‘stepped’ style. The addition of the pocket clip also makes the knife simply to carry and easy to attach.

Constructed from 440C stainless steel, the Spring Assisted Knife by Grand Way is one of the most affordable options available on our list. The classic design is incredibly sleek, with the handle and blade both colored in black with the addition of a monostatic clip for easy storage. Whilst sleek and simplistic, the knife is rust-resilient, durable, and stays sharp for long periods of time.

Designed to be comfortable to handle, the Spring Assisted Knife offers a convenient reverse and direct grip, and a handle made from aluminum that is aircraft-grade. This strong design is secured with a liner lock which is highly resilient to contamination from dirt. For added safety during storage, the knife also comes with a mechanical fuse, so it can’t open accidently. For a simple, but highly practical knife for survival, this offering from Grand Way is a good and reliable pick.

Gerber is well-known for their high-quality knives and survival tools, making them a popular brand for innovative and functional knives. The Mini Covert Fast Knife from Gerber is compact, serrated for multi-purpose use, and well-designed; a highly practical knife that is well-suited to a vast range of purposes. Much smaller than many knives of a similar style, the Gerber Mini Covert Fast Knife is very quick to release, with F.A.S.T opening technology used to assist the release of the blade.

The forward action opening means that the knife can be opened using only one hand, in difficult situations. The design of the knife is sleek, and all black. Unlike many knifes, the blade of the Mini Covert Fast Knife is made from stainless steel but coated in titanium 7Cr17Mov for improved resistance against corrosion. With an emphasis on security, the G-10 handle boasts a secure all-condition grip. If you’re looking for a small and lightweight knife, with a serrated edge, the Mini Covert Fast Knife, is a well-suited choice.

If you’re looking for an automatic knife that’s never going to let you down, a knife that you’ll keep forever and hand down to your kids, you’ve got to choose a Benchmade knife. Sure, they’re more expensive than your average knife but when a product has been handcrafted from the best materials and rigorously tested to ensure the quality, it’s worth every penny. The Benchmade Barrage 583 Knife is just that. It’s your forever knife. 

The blade is forged from 154CM stainless steel, known for durability, rust resistance, and edge retention. It’s a tanto blade with an extremely strong tip, making it perfect for tactical applications. This knife is actually the first Benchmade knife to feature the AXIS Assist. This automatic knife can be opened instantly with either hand, allowing you to have quick and easy access to your blade. 

The SOG TFSAT8-CP Flash II is a lightweight and ambidextrous automatic knife, perfect for everyday carry. Unlike some of the expensive automatic knives on the market, this knife is designed purely for practicality. It’s not designed with style in mind. However, it has a tactical aesthetic that will look good attached to a tactical belt. It features a 3.5-inch stainless steel blade with Black Titanium Nitrade (TiNi) coating. The blade has a Tanto point, similar to Japanese long and short swords, making it ideally suited for stabbing into hard objects. 

The Kershaw 1670BLK is a mid-range automatic knife, designed to be a versatile everyday carry tool. If you’re looking for something that’s just as comfortable opening boxes as it is in a defense situation, this is the knife for you. It benefits from SpeedSafe Assisted Opening, a technology that allows you to open it with one-hand. And it doesn’t matter if you’re right or left-handed. The aluminum handle is covered in Trac-Tec, which makes it easy to keep hold of, even if it’s wet. Plus, it has a reversible pocket clip for easy and quick storing. 

Of course, the main attraction is the blade. It’s forged from Sandvik 14C28N steel, a high-performance steel widely touted as the best steel for knife making. It has three main benefits – edge sharpness, edge stability, and corrosion resistance. It’s then coated in Diamond-Like Carbon (DLC), which further improves the durability.