Specifically designed for the URGI (Upper Receiver Group Improved) rail, Geissele Rail Panels offer a secure, aggressive texture that enhances control and handling. Constructed from a defense-grade polymer, these panels are built for durability under hard use and provide effective heat shielding during sustained fire. Optimized for M-LOK sections on Geissele rails, fitment may vary with other manufacturers-particularly polymer handguards, which are often thicker and may not be compatible.