UTG Pro AR-15 Extended Car Length Drop-in Quad Rail.
• Proudly Designed and Made in USA
• Fits Model 4/15 Carbines with Rails Extending Beyond Front Sight
• Aircraft Aluminum Extrusion with Integral Spinal Cords for Alignment
• Picatinny Rails with 19 Top Slots, 23 Bottom Slots, 25 Left/Right Slots
• Simple Installation, No Gunsmith or Tool Required
• Solid Locking Feature for Secure Fit and Zero Retention
• 18 UTG Rubber Rail Guards Included