Every HK416 MR556 compatible handguard *

*that I know about
I made this video since I thought I may as well put a personal research project from a couple months back to some public use and because I've seen people say that there aren't many option for HK416 handguards, hopefully this video proves otherwise (even if a few of these are no longer produced).

manufacturers
HK -- quadrails, hkey, mlok, etc (multiple lengths and colors in each style)
Geissele -- screwhole, mlok, and mlok/picatinny (multiple lengths and colors in each style)
HKparts -- mlok and keymod (multiple lengths)
Strike Industries -- Crux in keymod and mlok, Gridlok [mlok only] standard and lightspeed versions, and SLICK [keymod only] (multiple lengths in all versions)
Remington Defense -- screwhole type
Midwest industries -- mlok (multiple lengths)
Kinetic Development Group -- mlok (multiple lengths and colors)
Troy Industries -- mlok carbon fiber (multiple lengths)
Maxim Defense -- mlok (multiple lengths and front end styles)
Lancer System -- mlok carbon fiber (multiple lengths)
UTG pro -- mlok
B&T -- mlok full rail and partial rail version (two colors in each style)