I think it's standard.
I have / had the JRC Takedown and bought an M Lok hand guard from True North Arms (first transaction with them, like them and their website a lot, would buy again). It installed just as described above. Timed the (included) barrel nut (which the hand guard bolts to) with the included shim(s) and used blue loc-tite; been super secure.
*I am no affiliated with True North Arms in any way except as a satisfied customer
I think it's standard.
I have / had the JRC Takedown and bought an M Lok hand guard from True North Arms (first transaction with them, like them and their website a lot, would buy again). It installed just as described above. Timed the (included) barrel nut (which the hand guard bolts to) with the included shim(s) and used blue loc-tite; been super secure.
*I am no affiliated with True North Arms in any way except as a satisfied customer



























