
The legality of law enforcement acquiring a mortar is a complex issue and depends on various factors, including federal, state, and local laws. While mortars were once common infantry weapons, their legality in the present day is questionable. In certain cities, such as New York, mortars may be banned, while in other communities, they could be legal. Collectors and law enforcement agencies must exercise caution when dealing with such destructive devices to ensure they comply with the relevant regulations. To be considered deactivated by the ATF, a mortar must have a bar welded across the tube to prevent rounds from being loaded. The legality of building a mortar and mortar shells also varies, with some individuals claiming that it is possible to do so legally by paying a tax, completing background checks, and adhering to specific construction requirements.
| Characteristics | Values |
|---|---|
| Legality | The legality of acquiring a mortar varies from community to community. For example, in some cities like New York, a bazooka or a similar weapon could be banned. |
| Procedure | To legally build a mortar, one must pay a $5 tax, complete a background check, and file a Form 1 for the mortar cap. |
| Restrictions | A mortar with more than 109 grains of lifting charge is considered an explosive destructive device, for which an FEL is required. |
| Deactivation | According to the ATF, a mortar is considered "deactivated" when a bar is welded across the tube, no less than one inch below the muzzle, to ensure no round can be dropped down the tube. |
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What You'll Learn

Legality of law enforcement acquiring a mortar
The legality of law enforcement acquiring a mortar is a complex issue that requires careful consideration of various factors. Firstly, it is essential to understand that mortars are typically classified as "destructive devices" or explosive ordnance and are subject to strict regulations under the National Firearms Act (NFA) of 1934 and its subsequent revisions.
While the NFA provides a federal framework, the legality of owning a mortar can vary across different communities and states. Certain states or cities, such as New York, may have specific bans or restrictions on the possession of mortars or similar weapons, such as bazookas or rocket launchers. Therefore, law enforcement agencies must be well-versed in both federal and local laws before acquiring any such weapon.
To legally acquire a mortar, law enforcement would typically need to follow specific procedures and obtain the necessary permits or licenses. This may involve registering each mortar as a destructive device (DD) with the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF). Additionally, background checks and special taxes may be required to ensure compliance with the NFA.
It is worth noting that there are specific criteria for a mortar to be considered "deactivated" by the ATF. According to the ATF, a mortar must have a bar welded across the tube, no less than one inch below the muzzle, to prevent rounds from being loaded. This deactivation process is crucial for ensuring the safe handling and storage of mortars, especially during training exercises or display for public safety.
In conclusion, the legality of law enforcement acquiring a mortar depends on a multitude of factors, including federal and local laws, registration requirements, and deactivation procedures. It is imperative for law enforcement agencies to thoroughly understand and adhere to these regulations to ensure the safe and responsible use of such destructive devices.
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Mortars as destructive devices
In the United States, a destructive device is a type of firearm or explosive device regulated by the National Firearms Act (NFA) of 1934. The NFA defines a "destructive device" as:
> any explosive, incendiary, or poison gas, bomb, grenade, rocket having a propellant charge of more than 4 ounces, missile having an explosive charge of more than 1/4 ounce, mine or similar device.
The NFA also includes any weapon that expels a projectile by the action of an explosive or other propellant, with a bore of more than one-half inch in diameter. This includes mortars, which are considered destructive devices and are strictly regulated by the NFA.
The legality of owning a mortar varies from community to community. In some cities, such as New York, mortars may be banned, while in other states, they are allowed. Collectors and enthusiasts are advised to check with local laws before acquiring or building a mortar.
To be considered "deactivated" by the ATF, a mortar must have a bar welded across the tube, no less than one inch below the muzzle, to ensure that no round can be loaded or fired. This is an important safety measure to prevent accidental or intentional harm.
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Deactivated mortars
The legality of owning mortars varies from community to community. While mortars were common infantry weapons, their legality today is questionable. For instance, in some cities like New York, a bazooka, LAW, or AT-4 could be banned.
Collectors are advised to check with local laws before acquiring a mortar. Deactivated mortars are available for purchase in the UK and Europe. For example, a Deactivated M19 60mm Mortar SN. OP71 is advertised as a special offer. The firing lever is missing, but it is easily made. The M19 Mortar was first issued in 1943 and was used until the end of the Vietnam War. It was designed as an indirect-fire, high-trajectory weapon operated by one or two men. It had a range of one mile and could fire high-explosive or smoke rounds.
Deactivated WW2 US Brandt 60mm mortars are also available for purchase. These mortars come with all the correct period accessories, including a canvas jacket, cleaning rod, and toolkit. They are rare finds and are in good condition.
Deactivated Polish PPS-43 submachine guns, dated 1954, are also available for purchase. These guns are in great condition with minimal wear on the stamped steel body. The guns have a moving trigger and can be opened with the recoil of an Uzi SMG with a wooden stock.
It is important to note that deactivated guns cannot be sold to anyone under the age of 18. While it is not required to store them in a gun safe, it is advised to keep them in a locked cupboard at home and out of sight when transporting them.
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Confusion between real and replica mortars
The legality of owning heavy weapons like mortars varies from community to community. While a "used rocket launcher tube" is not on any federal list of prohibited items, local laws should be checked as these could be confused with live weapons. For example, in some cities like New York, a bazooka or a LAW or AT-4 could be banned.
Collectors should always be cautious when purchasing, transporting, and displaying these items. Law enforcement and the public should not have to guess whether a mortar is real or a replica. As replicas age and are used in re-enactments, there is a concern that these could be confused with actual weapons. Real firearms now come in colours that were once used to signal a toy, making it even harder to distinguish between real and replica weapons.
To be considered "deactivated" by the ATF, a mortar must have a bar welded across the tube, at least one inch below the muzzle, to ensure no round can be loaded. An exception to this rule is a non-firing replica bazooka, which is simply a metal tube without any internal firing components. However, as these replicas age, there is a concern that they could be confused with actual weapons.
Collectors should always check federal and local laws regarding the purchase and ownership of mortars and similar destructive devices.
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Legal processes for building a mortar
Building a mortar at home is a quirky hobby for some, but it is important to understand the legal processes involved before attempting to do so. In the United States, the laws collectively referred to as the National Firearms Act (NFA) govern the ownership and use of firearms, including mortars.
To legally build a mortar, one must follow certain procedures. Firstly, it is essential to understand the restrictions on the type of ammunition used. Any round with more than 109 grains of lifting charge is considered an explosive destructive device, requiring a special license, such as an FEL, to possess and use. Similarly, explosive rounds are also highly regulated and require appropriate licensing.
For those interested in building a Coehorn mortar, a type of mortar used during the Civil War, there are specific steps to follow. The barrels for these mortars can be purchased from specialised websites, such as www.blackpowder-cannons.com. These barrels come in different sizes, with the smaller version shooting golf balls and the larger one capable of launching aluminium beverage cans. The larger barrel also comes with engraved load data. It is important to note that these barrels are drilled to accept standard waterproof cannon fuses, which can be sourced from various suppliers.
In addition to acquiring the necessary components, individuals must also craft their own carriage for the mortar. This involves basic carpentry skills and can be done by following schematics and plans available online. It is worth noting that federal restrictions may not apply to mortars that load from the muzzle and are fuse-fired. However, local ordinances may vary, so it is crucial to check and comply with any relevant local laws and regulations.
To ensure compliance with the National Firearms Act, individuals building mortars may need to register their tubes and mortars as Destructive Devices (DD). This registration process ensures that hobbyists and enthusiasts remain within the legal boundaries set by the NFA.
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Frequently asked questions
The acquisition of a mortar by law enforcement is subject to legal considerations and regulations. While mortars were once common infantry weapons, their legality in the present day varies across different communities.
According to the ATF, a mortar is considered "deactivated" when a bar is welded across the tube, preventing the insertion of a round. However, the legality of similar weapons, such as bazookas, can be less clear and subject to strict regulation under the National Firearms Act (NFA).
Legally acquiring a mortar typically involves completing a background check and paying applicable taxes, such as the $5 tax mentioned in the National Firearms Act. Additionally, registering the mortar as a destructive device (DD) and complying with restrictions on explosive rounds are crucial steps in the process.
Yes, collectors can opt for non-firing replicas, which lack internal firing components. These replicas are solely metal tubes and do not require the same modifications as functional mortars to ensure deactivation. However, caution is advised during transportation and display to avoid confusion with actual weapons.











































