I seem to remember a product being advertised on here.  I forget the name. I tried searching for keywords in google images, but no luck.  I'm hoping someone here will know what it's called.

It's a thick rubber cover used to protect the handguard and insulate against heat by wrapping around it and locking across the top rail.  I believe it allowed the top rail to still be accessible for accessories and optics. Its look kind of reminded me of the old Israeli FAL wood handguards.

Does this ring a bell to anyone?

Manta Tac-wrap

Bingo!  Thank you so much.

Always glad to help out

neat