Midwest Industries now has a stiffy NV-friendly handguard design coming out.
Forward Controls Design had CMT remove some of the RHF’s lightening cuts.

The original BCM KMR was gouged easily, according to numerous accounts.
My ALG 10” EMR V2 heated up fairly quickly due to the aluminum handguard and barrel nut, but functioned perfectly.
I got a KAC URX4 specifically to end up as a laser host, because I understand plenty of handguards will flex a bit.

Have to ask…
Has anyone experienced problems with lightweight handguards?
Actual problems?