Description
The KAOS Stock System takes your rail-mounted 12-inch Havoc launcher and makes it a self-contained weapon. Instead of being confined to mounting on a handguard, you get a complete system ready to operate on its own.
What Makes the KAOS Stock System Different
Spikes Tactical engineered this system to maximize flexibility. You get the full package with a Mil-Spec M4 stock, A2 pistol grip, buffer tube, latch plate, and castle nut all included. It's designed to work with your existing Havoc 12-inch launcher, whether you're running a side-loader or rear-loader model. The aluminum receiver clamps cleanly around the launcher tube and mounts to standard Picatinny rails, so you can use aftermarket AR-15 stocks and accessories if you want to customize further.
Tough Build Quality You Can Count On
Construction is where Spikes doesn't cut corners. The system uses 6061 T6 aluminum with hardcoat anodizing and 1018 cold-rolled steel with black oxide finish. These materials stand up to regular use without excessive weight. The complete assembly comes in at 2 pounds 14 ounces, making it manageable for extended handling without fatigue.
Purpose-Built for the 12-Inch Havoc
The KAOS is specifically engineered for the 12-inch launcher, giving you that extra reach and velocity compared to shorter models. The system includes all mounting hardware and instructions, so setup is straightforward. Once assembled, you've got a capable launcher platform ready for flares, smoke, or training rounds compatible with your ammunition.
Key Specifications
- Manufacturer: Spikes Tactical
- Model Number: STH1200
- UPC: 815648022075
- Launcher Length: 12 inches
- Weight: 2 lbs 14 oz
- Material: 6061 T6 aluminum and 1018 cold-rolled steel
- Finish: Hardcoat anodized black and black oxide
- Stock Type: ST M4 Stock
- Grip: Mil-Spec A2 Pistol Grip
- Rail System: Mil-Spec 1913 Picatinny Top Rail
- Breech Lock: STZ push-button cylindrical breech lock
- Compatible With: Most aftermarket AR-15 stocks, latch plates, and pistol grips
- Ammunition: 5.75 inch U.S. Coast Guard approved flare, smoke, or gas rounds
What’s Included
- ST M4 Stock
- Mil-Spec A2 Pistol Grip
- Buffer Tube
- Latch Plate
- Castle Nut
- 1913 Picatinny Top Rail
- Mounting hardware
- Instructions
Frequently Asked Questions
Can I use this KAOS Stock System with a different sized Havoc launcher?
The KAOS Stock System is specifically designed for the 12-inch Havoc launcher. Spikes Tactical offers separate 9-inch versions for their smaller launchers, so make sure you're matching the right stock to your launcher length.
Is this KAOS system compatible with other AR-15 stocks and grips?
Yes, the system is built around standard AR-15 components and will work with most aftermarket stocks, latch plates, and pistol grips. This gives you flexibility to swap parts around or upgrade individual pieces based on your preferences.
What ammunition does the KAOS Stock System support?
The 12-inch Havoc launcher fires 5 3/4 inch U.S. Coast Guard approved rounds including flare, smoke, and gas cartridges. Make sure your ammunition matches this specification for safe and reliable operation.
Do I need any tools to assemble the KAOS Stock System?
Assembly is straightforward and requires minimal tools. The kit comes with all necessary mounting hardware and clear instructions to get you up and running quickly without special equipment.





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