I honestly don’t know what kind of hit they can take.
The barrel nut is short, barely longer than a stock/g.i. nut and has a big groove in the front for the bolts to pass through with a less than 1/4” flat forward of that for the rail.
I’ve had BCM handguards since they came out with the original KMR and they’re decently stout, but seem like they were built primarily for light weight and aesthetics.
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