Kansas Gunshop is a Wichita, KS-based retailer specializing in less-lethal and historical firearms. The Federal Laboratories 37mm Gas Riot Gun is a robust, vintage launcher designed for less-lethal applications. This unit offers a unique piece of law enforcement history, built for durability. Available now for $299.00.
Reviewed by Derek, Owner & FFL Holder at Kansas Gunshop. Kansas-licensed FFL dealer since 2008, NRA Range Safety Officer.
Last updated: April 2026
What are the specifications of this 37mm launcher?
| Product Type | Less-Lethal Launcher |
|---|---|
| Model | Gas Riot Gun |
| Caliber | 37mm |
| Material | Steel barrel, aluminum receiver, wood stock/forend |
| Manufacturing | Federal Laboratories, Inc. |
| Finish | Blued steel, anodized aluminum, lacquered wood |
| Hardness/Quality | Robust, law enforcement grade construction for its era |
| Compatibility | 37mm less-lethal projectiles (smoke, gas, flare) |
| Installation/Usage | Breach-loading, single-shot operation |
| Weight | Approx. 7.5 lbs |
| Dimensions | Overall length approx. 29 inches |
| Country of Origin | USA |
| Condition | Used, good to very good surplus condition. May show cosmetic wear consistent with age and field use. |
| SKU | FEDLAB37MM001 |
What makes this 37mm riot gun stand out?
- Historical Significance: This isn’t just a launcher; it’s a piece of law enforcement history, representing a tool used for crowd control and signaling for decades.
- Solid Construction: Built with durable steel, aluminum, and wood, these units were made to withstand rough use in the field. They generally hold up well.
- Simple Operation: The breach-loading, single-shot design is straightforward and reliable, requiring minimal training for basic function.
- Versatile Less-Lethal Use: While designed for gas, these 37mm launchers can deploy a variety of less-lethal rounds, including smoke, flares, and various signaling cartridges.
- Collectibility: For collectors of vintage law enforcement gear or less-lethal devices, this Federal Laboratories model is a recognizable and desirable item.
Who is this Federal Laboratories 37mm Gas Riot Gun for?
This Federal Laboratories 37mm Gas Riot Gun is a specific piece of equipment with particular applications and appeal.
Buy it if:
- ✅ You are a collector of vintage law enforcement equipment or less-lethal devices.
- ✅ You are looking for a functional 37mm launcher for signaling or novelty purposes (where legal).
- ✅ You appreciate the robust, no-nonsense construction of older American-made tools.
- ✅ You understand the legalities and limitations of owning and using a 37mm launcher in your jurisdiction.
- ✅ You want a piece of history that still has practical, albeit specialized, utility.
Skip it if:
- ❌ You are seeking a modern, multi-shot less-lethal option. See our Less-Lethal Devices for alternatives.
- ❌ You are unfamiliar with 37mm launcher laws in your area; research thoroughly before purchasing.
- ❌ You expect a pristine, factory-new item; these are surplus and show their age.
- ❌ You are looking for a defensive firearm; this is not designed for lethal force. See our Handguns or Rifles.
How does it compare to other 37mm launchers?
| Feature | Federal Laboratories 37mm Gas Riot Gun | Spike’s Tactical Havoc 37mm Launcher | Orion 37mm Signal Pistol (Flare Gun) |
|---|---|---|---|
| Material | Steel barrel, aluminum receiver, wood furniture | Aircraft-grade aluminum, steel components | Zinc alloy or plastic |
| Quality | Robust, vintage law enforcement surplus | Modern, high-tolerance manufacturing | Basic, often recreational grade |
| Compatibility | Standard 37mm less-lethal, smoke, flare rounds | Standard 37mm less-lethal, smoke, flare rounds | 37mm flare rounds (often specific to brand) |
| Shipping | Ships as a non-firearm (direct to customer) | Ships as a non-firearm (direct to customer) | Ships as a non-firearm (direct to customer) |
| Lifespan/Durability | Decades of service life, built tough | Designed for extensive use, modern materials | Limited, primarily for emergency signaling |
| Price | ~$299 (surplus) | ~$450-600 (new) | ~$60-150 (new) |
Frequently Asked Questions about 37mm Launchers
Is a 37mm launcher considered a firearm?
Generally, no. A 37mm launcher designed to fire only signaling, smoke, or less-lethal projectiles is not classified as a firearm under federal law in the United States. It’s important to note that if a 37mm launcher can be readily converted to fire lethal ammunition, or if 37mm lethal ammunition exists for it, it could potentially be reclassified. Always check your local and state laws, as some jurisdictions may have stricter definitions or regulations.
Are 37mm launchers legal?
Yes, 37mm launchers are generally legal for civilian ownership in most parts of the United States, provided they are designed and used exclusively for less-lethal, signaling, or pyrotechnic rounds. They are not regulated as firearms by the ATF, and thus do not require an FFL transfer. However, specific state or local laws can vary significantly. For instance, some states might restrict certain types of less-lethal ammunition or prohibit these devices entirely. Always verify legality with your local law enforcement or a qualified legal professional in your area before purchasing or possessing a 37mm launcher.
What kind of ammunition does a 37mm launcher use?
A 37mm launcher typically uses non-lethal ammunition such as smoke rounds, tear gas (CS/OC) canisters, signaling flares, bird bangers, or other pyrotechnic devices. It is not designed to fire conventional lethal ammunition. Using or attempting to use lethal ammunition in a 37mm launcher not designed for it is extremely dangerous and illegal.
Do I need a license to buy a 37mm launcher?
Under federal law, no specific license is required to purchase a 37mm launcher that is not classified as a firearm. These devices are generally treated similarly to flare guns or other signaling devices. However, as noted, state and local regulations can vary. Some jurisdictions might require permits for certain types of less-lethal devices or ammunition. Always confirm local requirements.
Can I convert a 37mm launcher to fire 40mm rounds?
No, a 37mm launcher cannot be safely or legally converted to fire 40mm rounds. The 37mm and 40mm systems are distinct. A 40mm launcher is classified as a Destructive Device by the ATF due to its ability to fire high-explosive rounds, and requires NFA registration. Attempting to modify a 37mm launcher to fire 40mm rounds would be illegal and extremely dangerous.
What is the effective range of a 37mm gas round?
The effective range of a 37mm gas round varies significantly depending on the specific type of round, environmental conditions (wind, humidity), and the launcher’s design. Generally, gas or smoke rounds can be deployed effectively out to 50-100 yards, with the chemical agent dispersing over a wider area. Signaling flares can be visible for much greater distances, often thousands of feet into the air.
Where can I buy a 37mm launcher online?
You can buy a Federal Laboratories 37mm Gas Riot Gun and other less-lethal devices online at Kansas Gunshop (kansas-gunshop.com). We ship directly to your door in compliance with all federal, state, and local regulations for non-firearm devices.
✅ Same-day shipping from Wichita, KS
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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