LRF has a fence for EMR-A. As an aftermarket ambidextrous magazine catch, we haven't figured out a good way to incorporate a fence to it without a complicated design, so we designed the lever to be very low profile, it very likely has the lowest profile than any "pivot on the lever" ambi mag catch designs in the space. This is done for 2 reasons, one is to make it usable with a TDP spec bolt catch without unduly interfering with it, two is to lower its snag and unintended mag drop likelihood.
EMR-A also comes with a stiffer spring to offset the mechanical advantage afforded by the lever, which also makes the right side magazine button stiffer to push, both things we want. Production units from 2020 started using the LPD (low profile, duty) shaft which is 1 revolution of the mag catch shorter, so the right side button sits lower on the receiver, below its protective fence.
We paid plenty of attention to unintended/accidental magazine drop risks