Kaos Stock System For 12'' Havoc 37Mm Flare Launcher Black

The Spike's Tactical Kaos Stock System transforms your rail-mounted 12" Havoc 37mm flare launcher into a complete, standalone weapon system. If you're running a Havoc launcher on a Picatinny rail but want the versatility and stability of a fully assembled rifle platform, this stock system gives you exactly that—converting what started as a modular accessory into a purpose-built launcher you can shoulder and deploy independently.

The Kaos Stock System packages everything you need to complete the build: a Spike's Tactical M4 stock, Mil-Spec A2 pistol grip, integrated 1913 Picatinny top rail, buffer tube, latch plate, and castle nut. The whole package is engineered around Spike's beefy 12" Havoc launcher, which features their STZ push-button cylindrical breech lock—a more robust design than typical lever-operated launchers. The launcher itself uses a side-swivel breech-loading design and a forward-sliding tube for rear loading, letting you quickly swap out spent 5¾" U.S. Coast Guard–approved flare, smoke, or gas rounds in the field.

Built tough from 6061 T6 aluminum and 1018 cold-rolled steel with hardcoat anodized and oxide-coated black finishes, the system is designed to handle regular use and harsh conditions. It's compatible with most aftermarket AR-15 stocks and grips if you want to swap components later, and the integrated Picatinny top rail gives you room to mount optics, lights, or other accessories for training or field operations.

Key Features

• Converts rail-mounted Havoc launcher into a standalone, shouldered weapon system
• STZ push-button cylindrical breech lock—stronger than traditional lever designs
• Side-swivel breech-loading design with forward-sliding tube for quick round changes
• Includes M4 stock, Mil-Spec A2 grip, buffer tube, latch plate, and castle nut
• Integrated 1913 Picatinny top rail for optics and accessories
• Durable 6061 T6 aluminum and 1018 cold-rolled steel construction with hardcoat anodize
• Supports 5¾" USCG-approved flare, smoke, and gas munitions
• Compatible with most aftermarket AR-15 stocks and grips

Specifications

Frequently Asked Questions

What's included in the Kaos Stock System?

The system comes complete with an ST M4 stock, Mil-Spec A2 pistol grip, 1913 Picatinny top rail, buffer tube, latch plate, castle nut, and the 12" Havoc launcher with mounting hardware and instructions.

Can I use this Kaos Stock System if I already have a Havoc launcher mounted to a rail?

Yes. The Kaos Stock System is designed to take an existing rail-mounted Havoc launcher and convert it into a standalone weapon system you can shoulder independently.

What ammunition does the 12" Havoc flare launcher use?

It fires 5¾" U.S. Coast Guard–approved flare, smoke, and gas rounds via breech-loading.

Is the Kaos Stock System compatible with other AR-15 stocks and grips?

Yes, the system is compatible with most aftermarket AR-15 stocks, latch plates, and pistol grips, so you can customize it to your preference.