This quad rail system is designed to fit with standard AR15 gas tube. The compatibility with any special piston system is not guaranteed.
- Revolutionary Free Floating Design
- Solid Aircraft Aluminum Construction with State-of-art Manufacturing Technologies
- Great Enhancement to All Model 4, 15 and 16 Rifles
- Four Picatinny Rails Each with 20 Slots
- Easy and Quick Installation
- Extensively Tested by Field Experts for Most Satisfactory Performance
- Black Rubber Rail Guards Included