These things are sweet, easy to install, easily modified so you can customize to your needs. Effectively creates a barrier from the heat transfer of your barrel to the rail after extended periods of firing at the range.
I buy the KMR rail because I like a slim, and light handguard, the panel kit added no bulk to my hand guard and fit beautifully around my BCM short keyMod vertical grip. If you're on the fence about this pannel kit, don't be. Pull the trigger and take the shot you won't be sorry. 👍