FLASH BANG DEF TEC NO. 25

The Defense Technology (Def Tec) No. 25 is a specialized "Distraction Device" widely used by tactical units. Unlike the standard heavy steel-bodied flashbangs (like the CTS 7290), the No. 25 series is often recognized for its compact, tactical size and its specific internal configuration. It is designed to provide the same sensory overload while being easier to manage in high-stress, rapid-entry environments.

Key Design Elements

• The "No. 25" Designation: The number 25 traditionally refers to the 15-gram (or sometimes 25-gram in older nomenclature) pyrotechnic charge. This provides a massive pressure wave and flash while maintaining a smaller physical footprint than standard "full-size" devices.

• Low Roll II™ Technology: Modern versions of the No. 25 often utilize the "Low Roll" body. This design features an offset center of gravity or specialized porting that prevents the device from rolling away or "walking" after it hits the floor, ensuring it stays exactly where the operator threw it.

• Sound & Light Output: * Sound: Approximately 175 decibels (at 5 feet).

  • Light: Between 6 and 8 million candela.

• Safety Features: Like the 7290, it uses a non-fragmenting body. The pressure and flash are released through a series of ports (holes) in the side of the canister, while the metal body remains intact to prevent shrapnel.

• Non-Reloadable vs. Reloadable:

  • 7001NR: The common Non-Reloadable version is a single-use tactical device. Once it's deployed, the entire unit is discarded.

  • 7001: The Reloadable version allows agencies to replace the internal "charge tube" and fuse while reusing the heavy steel exterior body, making it more cost-effective for high-volume training.

Model Variations

Safety & Hazards

The Def Tec No. 25 generates an extreme overpressure wave. In an enclosed space, this doesn't just "scare" a suspect; it physically impacts the lungs and the fluid in the inner ear, causing a total loss of balance and cognitive processing.

Hazard Note: Because of the heat generated by the pyrotechnic mix (usually magnesium/aluminum powder), these devices can reach temperatures of several thousand degrees for a fraction of a second. They should never be deployed near flammable liquids, loose papers, or directly onto a person, as they can cause severe thermal burns or ignite fires.

Legal Status

• LE/MIL Only: These are classified as Destructive Devices under the National Firearms Act (NFA). They are strictly restricted to law enforcement and military purchase.

• Civilian Replicas: You may see "Bluegun" or "Inert" versions of the No. 25 for sale to civilians; these are solid blocks of plastic/polyurethane used for holster fitment or training and contain no explosive components.