At one time, there were quite a few manufactures that used some form of epoxy attached CF hand guards, DPMS being one:
DPMS Carbon FF Hand Guard
Quote:This DPMS Carbon Fiber AR-15 Handguard free floats the barrel for increased accuracy potential. The handguard's carbon fiber construction makes it 40 percent lighter than a standard aluminum tube, as well as much more efficient at dissipating the heat radiating from a hot barrel. Despite its light weight, this handguard is rigid and durable enough for use in action shooting competitions such as 3-Gun. Installation is semi-permanent since the handguard must be secured to its proprietary barrel nut with the included epoxy cement.
