Leaving the front sight post- Troly Delta Rail. The only real choice, they are good handguards. True drop in, takes less than 5 minutes.
Switching to a low pro gas block or chopping the GB- Geissele MK16 or better the Hodge Defense Wedgelok Rail. Both have minimal Rail deflection under load (read stiff) with an excellent barrel nut/rail interface. The Hodge Wedgelok is stiffer and feels better in the hand.
Last edited by Formidilosus; 03/26/20.
