HK 416/MR556 handguard , barrel nut with the barrel bolt, flip up front sight. This is the rarest color made off OD. All you clone builders I have other real parts for your builds. These handguards of normal colors go for 600 to 800. The OD goes for over a grand. What do you have to trade. I'm open to other cool stuff. Pistols, uppers, parts, looking for a ruger 10/22 charger or breakdown. 469-407-8961 text or call only. Rob