Im using the HRD AFAX-09 on my AXSA, my Remington 40-X Repeater in an AX chassis, and on my AR15 I built on a Keymod VLTOR VIS Fusion 10” upper, and all three work perfectly. I’m pretty sure they make an AFAX-11 for the longer AXMC handguard. I’ve also heard a lot of good stuff about the...