If you are looking for a headset for the helmet, All Alpha Armory is an authorized dealer of EARMOR.
Earmor’s performance easily outshines most mid-range and budget competitors currently on the U.S. market. However, due to a lack of marketing in the U.S., many people either haven't heard of the brand or are misinformed by outdated impressions of poor early performance. Based on my experience, the M32/M31 models perform very similarly to the Sordin Supreme PRO-X, achieving around 80–90% of its performance level, with almost no “headphone feel.” If you don’t already have a helmet-compatible headset, I highly recommend giving the Earmor M32/M31 a try.