Our defenders of the sea need real world solutions. straightJacket rail covers are the superior handguard thermal mitigation solution. 

Liberty's Defense staightJacket Rail Cover is a perfect ensemble of five separate layers of Kevlar, basalt, and aluminized silica stitched with Kevlar thread. The failsafe retention system of Kevlar webbing, marine grade stainless steel cable, and snap shackle ensure constricting pressure to your rail.

Photo courtesy @bat.defense