We Live to Protect, so don't leave your firearm rail unprotected. A nicked or dinged gun rail can create an inconsistent mounting surface for your optics, and the rails themselves can be sharp. So protect yourself and your gear with the Hexmag WedgeLok low-profile rail covers. They look amazing, function better than others on the market and complete your rifle's ability to get the job done. Hexmag Keymod rail covers use the patented Wedgelok technology to hold it securely to your hand-guard. When installing simply press each section firmly into each Keymod slot. Once the Wedgelok is in place it will expand and lock in behind the hand-guard.