Buying a 100 ml tear gas canister as soon as you reach adulthood, without papers or declaration: it is indeed legal in France. But slipping the same bottle into your bag before heading out onto the street follows a completely different legal logic. Between freedom of purchase and right to carry, confusion is common, and it can cost you.
- 100 ml or smaller tear gas sprays (Category D) are purchasable and freely held from age 18, without declaration or authorization.
- Carrying or transporting them in public spaces is prohibited without a “legitimate motive,” assessed on a case-by-case basis by authorities and judges.
- Non-compliance with this rule constitutes an offense punishable by up to 1 year in prison and a fine of €15,000; a fixed fine of €500 exists experimentally in certain jurisdictions.
- Buying freely, transporting freely: the costly confusion
- What the law really says about legitimate motive
- The sanctions faced by those who thought they were in the right
Here is a topic worth examining with the same rigor we would apply to any scientific discovery: in law as in physics, approximations always end up catching up with you. Many French people, in good faith, believe that an object one is legally allowed to buy can inevitably roam freely in its wake. Yet in France, the right to possess and the right to carry follow two completely different logics.
Buying freely, transporting freely: the costly confusion
Let’s start by setting the frame, because it’s simpler than you might think. An incapacitating tear gas aerosol with a capacity of 100 ml or less belongs to Category D of the Code of Internal Security. Practically, this means that any adult may acquire it and keep it at home without declaration, without authorization, without any special administrative steps. Beyond 100 ml, the product changes status and moves to Category B, which requires formal authorization.
This classification is neither arbitrary nor recent. It stems from a decree of June 29, 2018, which entered into force on August 1 of the same year, issued under a Law adapting the EU security framework. Since that date, all incapacitating or tear-gas aerosols under 100 ml are officially regarded as Category D weapons, on par with certain sharp or blunt objects.
The trap is that this Category D status gives the impression of a nearly innocuous product, sold freely in stores like an umbrella or a flashlight. Except that a weapon remains a weapon, even when categorized as the least restrictive. And that is precisely where French law introduces a distinction that many people ignore: the right to buy does not automatically confer the right to carry on one’s person or to transport wherever one pleases.
What the law really says about the legitimate motive
Article L315-1 of the Code of Internal Security states a clear principle: carrying or transporting weapons and ammunition is prohibited without a legitimate motive. Article R315-1 clarifies that this prohibition applies to Categories C and D, including our 100 ml tear gas sprays. In other words, one can indeed own the item at home, but taking it into public requires a valid justification.
It remains to be seen what exactly this notion of a legitimate motive covers, which can sometimes feel gray. According to service-public, the police and judges assess the situation on a case-by-case basis, taking into account the context: location, time, the type of weapon carried, and the profile of the holder. There is therefore no fixed list of authorized situations, but rather a bundle of indicators evaluated against the circumstances.
The government provided a concrete clarification in a reply published in the Journal Officiel on June 24, 2025, in response to a written question submitted to the National Assembly. The example cited concerns a lone woman in late-evening public transport, equipped with a tear gas canister: a situation in which the legitimate motive can indeed be recognized. But the ministry stressed that this is by no means a general automatic right to carry the weapon, merely one illustration among others, assessed according to the precise facts of the case.
The sanctions faced by those who thought they were within their rights
Here is where legal theory meets the reality of consequences, often harsher than people imagine. Carrying or transporting a Category D weapon without a legitimate motive constitutes a crime, punishable by up to one year in prison and a fine of €15,000. If the acts are committed by several people, penalties rise to two years in prison and €30,000 in fines. This is far from the simple fine that many envision.
To try to unclog the courts for this type of case, an experimental scheme was launched on April 17, 2024 in the jurisdictions of twelve prosecutors’ offices, including Bobigny, Lyon, Marseille and Toulouse, then extended to Paris on May 2, 2024. It allows, under certain conditions, the use of a fixed offense fine of €500, reduced to €400 or increased to €1,000 depending on the circumstances. But this mechanism is not automatic: it requires voluntary surrender of the weapon to the authorities, which transfers ownership to the State. Without this surrender, the standard judicial process applies, with considerably heavier penalties.
Last detail that matters, especially for those who might want to stroll with an object that merely resembles a weapon: the visible carrying of such an item in a public transport setting is also sanctioned, with a fine of up to €750, plus possible confiscation. A reminder that in terms of safety, appearance can count almost as much as the reality of the object being carried.
In the end, the rule is simple enough to keep in mind before you reach for your handbag or backpack: in France, tear gas aerosols of 100 ml or less are purchasable from age 18, but carrying or transporting them without a legitimate motive is forbidden. A nuance that, if misunderstood, can turn a simple reflex of prudence into a real legal risk.
