Great budget handguard - AIM Sports Inc AR/M4 MLOK Handguard

This is easiest handguard I have ever installed. The low-profile barrel nut allows clearance to the gas tube in any position, so that it doesn't have to be "clocked". You can therefor put the exact torque you want on the nut. The clamp-on design also means not clocking is required to put fasteners through the handguard and into the nut. The little ears that interface with the upper receiver ensure proper alignment of the picatinny rails. The black finish is slightly shinier than the upper I used, but that is a minor complaint.