At just 10oz the Cobra Rail LT (Light Weight) handguard system is our lightest available. This robust design mounts to any AR-15 Mil Standard barrel nut, and does not require any propriatry tools. With 8 faces to attach KeyMod and M-Lok accessories, the Cobra rail offers tremendous versatility and customization. Each rail is hard-coat anodized for a rugged, long lasting finish. Available in black anodized or Cerakote Magpul Flat Dark Earth. Mounting hardware include. Fits all Mil-Standard and most side charged upper receivers, includes anti rotation tabs. Covered by X Products Lifetime No-Hassle Warranty.