Anti-Rotation Tabs Necessary?

[Hansel&Grendel]

What is the horde's thought on anti-rotation tabs on a handguard? Some say that they're for handguard alignment only and others say what the name implies - anti-rotation of the handguard if sufficiently stressed, or both. I'm looking at a Foxtrot-Mike 10.5" handrail that doesn't have them but it does have 8 screws to secure the handguard to the barrel nut. The barrel nut is timed only for screws fitment through the handguard, not for gas tube alignment/fitment.

Thanks, Hans

[grayfox]

Is this the joebob Matrix Foxtrot-Mlok?

[Hansel&Grendel]

It's Primary Arms:
https://www.primaryarms.com/fm-produ...lok-gen-2-10.5

[FRB6.5]

You would have to exceed the torque applied to the barrel nut for that design to rotate. The tabs are more for designs that just clamp over the nut.