Exploring the Underfolder Stock for AK-pattern Rifles: Pros, Cons, and Alternatives

What is an M70 underfolder stock?

M70 underfolder stock

The M70 underfolder stock is a folding stock designed for the Yugoslavian M70 assault rifle. The M70 is a variant of the AK-47 and is sometimes referred to as the Yugoslavian AK-47. The underfolder stock allows the user to fold the stock underneath the rifle, making it more compact for storage and transport. The design of the underfolder stock also allows for easier use in restricted spaces, where a full-length stock may be cumbersome.

The M70 underfolder stock is made of stamped steel and is hinged at the rear of the receiver. The stock attaches to the rifle with a large hinge pin and a hook that locks into a slot on the underside of the receiver. A spring mechanism in the stock provides tension to hold it in either the folded or extended position. The underfolder stock is adjustable for length of pull, and the height of the cheekpiece can be changed by swapping out different thickness rubber pads.

The M70 underfolder stock is a popular aftermarket accessory for AK-style rifles and is widely available. It is also used on other variants of Yugoslavian AK rifles, such as the M65, M76, and M77. The underfolder stock is particularly popular among AK enthusiasts who enjoy building and customizing their own rifles. It is often used in place of the standard fixed stock or side-folding stock, as it is seen as more authentic to the original Yugoslavian design.

The M70 underfolder stock is not without its drawbacks, however. The design of the stock can make it more difficult to shoot accurately, as the hinge point is closer to the shoulder and can cause the rifle to cant. Additionally, the underfolder stock does not provide as much stability as a fixed stock, especially when firing in the prone position. Some users may also find the underfolder stock to be uncomfortable to shoot for extended periods of time, as the stock can dig into the shoulder.

Overall, the M70 underfolder stock is an iconic accessory for the Yugoslavian AK-47 and is popular among AK enthusiasts. It provides a compact and lightweight option for those who need to transport or store their rifle in tight spaces. While it may not be the most comfortable or stable stock option, it is certainly a unique and distinctive feature of the Yugoslavian AK-47.

The History of the M70 Underfolder Stock

M70 Underfolder Stock

Produced by Yugoslavian arms manufacturers Zastava Arms, the M70 is a light machine gun chambered for the 7.62x39mm cartridge. This weapon has attracted attention from firearm enthusiasts for its unique underfolder stock, which allows for easy storage and provides the shooter with a compact weapon that is easy to maneuver when firing. The development of the M70 underfolder stock stretches back to the early 1960s when Yugoslavia started making and exporting their version of the AK-47.

The M70 rifle was produced as Yugoslavia's answer to the Soviet AK-47. It was produced as the M70B1, which was similar to the AKM. The M70 underfolder stock was then added as a variation, known as the M70AB2, which offered better mobility and concealment than the standard M70B1.

The underfolding stock added to the reputation of the M70 rifle for its ability to be used in tight quarters, making it a favorite of Yugoslavian Special Forces, who used it in tight urban settings where quick movements were necessary. The M70 was later adopted as a standard issue for the Yugoslavian Army.

The M70 underfolder stock was also exported to other countries in the Balkan area and found its way into the hands of various Islamic militant groups, school shooters, and drug cartels all over the world.

The M70 underfolder stock has since been discontinued in Yugoslavia, and many other countries have replaced it with newer models. However, it is still highly sought after by collectors and enthusiasts all over the world due to its historical significance and unique features.

Despite being disassembled and reassembled frequently, the M70 underfolder stock has proven to be reliable and durable over time. It can withstand harsh environmental conditions, making it a popular choice for those who enjoy outdoor activities such as hunting and shooting.

For those who are interested in owning an M70 underfolder stock, it is important to note that it is not legal in all states in the United States. Some states require special permits to own or even possess one, so it is vital to be well-informed before making a purchase.

Overall, the M70 underfolder stock has carved itself a place in firearms history with its unique design, reliability, and durability. Despite being discontinued by Yugoslavia, it remains a popular choice for enthusiasts and collectors all over the world, and it is sure to remain a sought after piece for years to come.

Pros and Cons of the M70 Underfolder Stock

M70 Underfolder Stock

If you are a gun enthusiast, you are probably familiar with the M70 underfolder stock. This iconic feature has become synonymous with the AK-47 rifle and is often the first thing people picture when they think of this weapon. But is the M70 underfolder stock really all that it is cracked up to be? In this article, we will take a closer look at the pros and cons of this feature to help you determine whether a rifle with an M70 underfolder stock is right for you.

Pro: Compact Size

M70 Underfolder Stock Size

One of the most significant benefits of the M70 underfolder stock is its compact size. When the stock is folded, it significantly reduces the overall length of the rifle. This feature makes it easier to transport and more discreet to carry around. If you are looking for a weapon that can be easily concealed, the M70 underfolder stock is an excellent choice. This feature is ideal for anyone who wants to stay under the radar, whether for personal or professional reasons, such as military or law enforcement work.

Pro: Easy to Maneuver

M70 Underfolder Stock Maneuverability

The M70 underfolder stock also provides excellent maneuverability. When the stock is folded, it allows the shooter to get in and out of tight spaces much more easily than they would with a traditional fixed stock. This feature also makes it easier for the shooter to get into a firing position quickly, which can be critical in high-pressure situations where every second counts.

Con: Reduced Stability

M70 Underfolder Stock Stability

While the M70 underfolder stock offers several advantages, it has some downsides as well. One of the most significant drawbacks of this feature is that it can reduce the rifle's overall stability. When the stock is folded, there is less surface area in contact with the shooter's shoulder, which can make it challenging to maintain a stable firing position. This lack of stability can lead to decreased accuracy and slower follow-up shots. As a result, the M70 underfolder stock may not be the best option for long-range shooting or situations that require a high level of precision.


In summary, the M70 underfolder stock is an excellent feature for anyone looking for a compact and easy-to-maneuver rifle. Its compact size makes it ideal for anyone who needs to stay under the radar or transport their weapon discreetly. However, it is essential to keep in mind that the underfolder stock may reduce the rifle's overall stability, which can impact accuracy and follow-up shot speed. Ultimately, whether the M70 underfolder stock is right for you comes down to your specific needs and preferences as a shooter.

How to Install and Remove an M70 Underfolder Stock

Installing M70 Underfolder Stock

The AK-47 rifle is one of the most popular assault rifles on the planet today. It is an incredibly reliable weapon that has been used in various conflicts worldwide, and it is undoubtedly a favorite among gun aficionados worldwide. Seeing as it is so popular, third-party manufacturers often produce additional parts that gun owners can use to modify their AK-47 as required. One of the most popular aftermarket accessories that people seek is the M70 underfolder stock. This underfolder stock makes the AK-47 more compact, making it possible for users to transport it with ease. Installing the M70 underfolder stock is not a difficult task, and below is a guide to help you install and remove it.

How to Install M70 Underfolder Stock

Before you can install the M70 underfolder stock, you must first obtain the necessary tools. These tools include a vise, a punch set, a 5mm and 4mm Allen wrench, and a rubber hammer. Once you have these tools, follow the steps below to install your M70 underfolder stock:

  1. First, remove the stock that came with your AK-47. Head over to the back of the gun, where the spring button is located, and push the button simultaneously with the stock, sliding the entire assembly out of the receiver.

  2. After you have removed the old stock, inspect the receiver to ensure that it is clean, dry, and free of debris. Dirt or debris may prevent the new M70 underfolder stock from fitting correctly.

  3. Now, slide the hinge mechanism of the new M70 underfolder stock all the way onto the rear of the AK-47 receiver, and line up the holes on the hinge mechanism with those on the receiver.

  4. After lining up the holes, insert the pin into the hinge mechanism and drive it through the holes you aligned. You can use a punch set and a rubber hammer to do this effectively. Ensure that the pin is flush-fitting, and if it isn't, tap it in gently until it is.

  5. Test your new M70 underfolder stock to ensure that it functions correctly by extending it and locking it into place.

How to Remove M70 Underfolder Stock

The process of removing an M70 underfolder stock is just as easy as installing it. However, instead of using punch and hammer, you will use the 4mm Allen wrench to remove the pin. Follow the steps below to remove the M70 underfolder stock:

  1. Begin by unfolding the underfolding stock.

  2. Locate the release mechanism, which is located at the top of the hinge. It's a small button, so it should be easy to miss.

  3. Using the 4mm Allen wrench, unscrew the pin and take it out of the hinge.

  4. Once you have removed the pin, you can slide the entire hinge assembly and stock off the back of the AK-47 receiver.

  5. Finally, reinstall your original AK-47 stock back onto the receiver, and your gun will be back to its original specification.

It's worth noting that M70 underfolder stocks are different, and depending on where you purchase them, the installation process could vary. Be sure to follow the instruction manual that comes with the underfolder stock to make sure you are not missing any critical steps.

Overall, M70 underfolder stocks are a great accessory that helps gun owners make their AK-47s more compact and more comfortable to transport. With this guide, you can install or remove an M70 underfolder stock from your gun with ease. However, if you feel that you don't have the skills and knowledge to do it, seek help from a professional gunsmith; otherwise, you risk damaging your weapon.

M70 underfolder stock and the law: regulations and restrictions

M70 underfolder stock

Gun ownership is a contentious issue that has been a topic of debate in various countries worldwide. In the United States, gun ownership is a fundamental right protected by the Second Amendment to the Constitution. However, the ownership, transfer, and use of firearms are regulated by federal and state laws. One of the regulations that affect gun ownership is the M70 underfolder stock.

The M70 underfolder stock is a type of gun attachment that enables the user to fold the stock under the barrel for easy storage and transportation. It is most commonly used in M70 rifles, which are popular firearms manufactured in Yugoslavia and Serbia. The M70 underfolder stock has gained popularity among gun owners and enthusiasts due to its unique design, versatility, and ease of use.

However, the use of the M70 underfolder stock is regulated by federal and state laws. The sale, transfer, and possession of firearms in the United States are mainly regulated by the National Firearms Act, the Gun Control Act, and the Brady Handgun Violence Prevention Act.

Under these laws, some regulations and restrictions apply to the use of the M70 underfolder stock. Here are some of the regulations and restrictions that apply:

1. Registration

M70 underfolder stock

One of the regulations that apply to the use of the M70 underfolder stock is the registration requirement. Under the National Firearms Act, all firearms that fall under the category of Title II weapons must be registered with the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF). The M70 underfolder stock is classified as a Title II weapon, thus it must be registered with the ATF and a tax paid on it.

2. State regulations

M70 underfolder stock

State laws regulate firearms independently and can have more restrictive regulations on the use of M70 underfolder stock than federal law. For example, some states may ban the possession, transfer, or sale of M70 underfolder stock entirely, or they may require additional registration, background checks, and licensing. It’s important to check state regulations to comply with them.

3. Age restrictions

M70 underfolder stock

Gun ownership is limited to people who are 18 years and above, and for purchasing firearms from an FFL dealer, the age is limited to 21 or older. It means that to purchase and own an M70 underfolder stock, the user must be at least 18 years old. Persons who are below that age and are caught in possession risk tough legal consequences.

4. Background checks

M70 underfolder stock

It is mandatory for individuals purchasing firearms from an FFL dealer to undergo background checks before the sale or transfer of the firearm. The background check is meant to identify if there is an underlying issue that may pose a threat to public safety. Before purchasing an M70 underfolder stock from an FFL dealer, the user must undergo a background check.

5. Restrictions on Certain Buyers and Possessors

M70 underfolder stock

The M70 underfolder stock is prohibited from being acquired or possessed by people who are barred from owning firearms under federal and state laws. Such persons include those with a felony conviction, those with active warrants, those with an indictment for a crime punishable by imprisonment for more than a year, fugitives from justice, and those who have been declared mentally incompetent by a court.

In conclusion, the use of M70 underfolder stock is regulated by both federal and state laws. It’s important that users comply with the regulations and restrictions to avoid legal trouble. This ensures the safety of individuals while enjoying their right to own firearms.

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