Aerial burst pepper rounds are 37mm munitions that detonate above a crowd to disperse OC agent over a wide area, giving officers a way to break up a group without moving into direct contact.
Instead of relying on a single stream aimed at one person, the round travels downrange, bursts at a set point above the target area, and lets the agent settle across dozens of people at once.
For a training coordinator planning a crowd-management response, the shift from individual to area deployment changes almost everything about how the tool is used.
These rounds fall under the broader category of 37mm crowd control ammunition and function as non-lethal area saturation rounds, fired from a dedicated launcher rather than carried and triggered by hand.
Because the burst happens in the air rather than at the muzzle or on contact, the agent spreads more evenly across a footprint the operator selects before firing, rather than concentrating along whatever path a handheld canister happens to be aimed at.
A crowd that has turned hostile does not wait for an officer to close the distance and deploy a canister person by person.
Agencies that plan for that reality need a way to affect groups from a stand-off distance, and the decision to bring aerial burst pepper rounds into a program carries real weight: it changes training requirements, launcher procurement, and the after-action reporting that follows any deployment.
Getting the mechanics and limitations right before the round ever gets certified for a rack matters more than any spec sheet claim.
The sections below cover how these rounds work, what range and coverage to expect, and how they differ from the pepper spray already carried on patrol.
How the Aerial Burst Mechanism Works
An aerial burst round is loaded into a 37mm launcher and fired on an arc rather than a flat trajectory.
A time-delay or impact fuze triggers the burst at a set point in the air, releasing the OC payload as a fine cloud rather than a liquid stream.
This is what separates aerial burst pepper rounds from muzzle-blast variants, which release their payload immediately at the barrel rather than downrange.
The airborne burst lets an operator deploy the agent directly over a group without needing a clear line of fire to any single person in the group.
Also Read: 37mm Launcher for Crowd Control: How It Works & When It Is Used
What Sets These Rounds Apart from Handheld Pepper Spray
Handheld OC spray is designed for one person at close range, typically within roughly 15 feet, though exact range varies by formulation and should be confirmed against current product documentation, and requires the officer to be close enough to make contact.
Aerial burst rounds are OC pepper dispersal munitions designed for the opposite situation: a group at a distance the officer has no intention of closing.
The concentration, delivery method, and coverage pattern are sufficiently different that agencies should treat the two as separate tools in a use-of-force program rather than as a larger version of the same thing.
Training on one does not substitute for certification on the other.
Effective Range and Area Coverage
Range and coverage vary by manufacturer and specific product line, so any figure used in a procurement spec or training document should be confirmed against current documentation before publishing or citing to a review board.
As a category, long-range pepper spray rounds fired from a 37mm platform are designed to reach well beyond the range of a handheld canister, with a burst radius that blankets a defined ground area rather than a single point.
Wind, temperature, and elevation all affect how the agent settles once it disperses, which is why range figures on a spec sheet describe ideal conditions rather than a guarantee.
Why Riot Control Teams Choose Area Deployment Over Ground-Level Contact
For a team facing a large, non-compliant group, closing the distance to deploy a handheld spray raises the risk of officers getting surrounded or having the canister taken.
Riot control OC munitions fired from a launcher keep the operator at a standoff distance while still affecting the group, a tactic Canadian police tactical teams have used with 37mm launchers at major events, as documented during G20 summit security operations in 2010
This is the core reason non-lethal area-saturation rounds are built into crowd management plans rather than relying solely on canister-based tools carried on a duty belt
Training and Certification for Launcher-Deployed Rounds
Because these rounds are fired from a dedicated launcher, certification covers weapon handling, angle of fire, and safe stand-off distances in addition to the OC exposure training already required for handheld spray.
Agencies should confirm current certification hours and recertification intervals with the training division rather than relying on figures from an older program, as requirements can vary across product lines and jurisdictions.
Adding Aerial Burst Rounds to a Crowd Control Program
Aerial burst pepper rounds allow agencies to manage crowds from a safe distance.
Rather than a single liquid stream, these 37mm rounds arc toward the target and burst overhead, dispersing a wide cloud of OC agent. This stand-off capability makes them a distinct tool requiring specific training. Because range and coverage vary by product line, agencies should always verify specifications using current manufacturer documentation.
Less Lethal DefenX manufactures its 37mm aerial burst rounds in-house at its Sarnia, Ontario, facility.
Keeping production under one roof ensures strict batch consistency and reliable turnarounds for law enforcement, military, and government agencies building out their crowd control programs.
Upgrade your agency’s stand-off capabilities. Contact us today for product specifications, pricing, and training support.
Frequently Asked Questions
How Does an Aerial Burst Pepper Round Disperse OC Spray Over a Crowd?
The round travels on an arc and triggers a fuze at a set point above the target area, releasing the OC payload as a fine cloud rather than a liquid stream. This spreads the agent across a wider footprint rather than in a single direction of fire.
What is the Effective Range of a 37mm Aerial Burst Pepper Round?
Range depends on the specific product and launcher combination, and figures vary by manufacturer. Agencies should confirm exact range specifications against current product documentation before including a number in training or procurement materials.
How Is Aerial Burst Pepper Ammunition Different From Handheld Pepper Spray?
Handheld spray targets one person at close range and requires the officer to make contact. Aerial burst rounds are fired from a launcher at a stand-off distance and disperse OC agent over an area rather than at a single target.
What Area Can One Aerial Burst OC Round Cover During Deployment?
Coverage area depends on burst height, wind, and the specific round, so it varies by product line. Manufacturer documentation should confirm the expected footprint for a given round before it is included in a training plan.
Why Do Law Enforcement Agencies Use Aerial Burst Rounds for Riot Control?
They let officers affect a group from a distance without closing in or risking direct contact, reducing the risk of being surrounded or having equipment taken during a crowd control response.
