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+--- Thread: Anti-Rotation Tabs Necessary? (/showthread.php?tid=20708)
Anti-Rotation Tabs Necessary? - Hansel&Grendel - 02-27-2020
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
Anti-Rotation Tabs Necessary? - grayfox - 02-27-2020
Is this the joebob Matrix Foxtrot-Mlok?
Anti-Rotation Tabs Necessary? - Hansel&Grendel - 02-27-2020
It's Primary Arms:
https://www.primaryarms.com/fm-products-ultra-light-free-float-handguard-m-lok-gen-2-10.5
Anti-Rotation Tabs Necessary? - FRB6.5 - 02-27-2020
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.