Gen 2 KM (fits without using QD Adapter Ring)

Gen 1 KM (does not fit without using QD Adapter Ring) Here are some pictures of the different KeyMo generations: As an example, people that had thread fitment inssues with the Gen 2 KM (which fit) sent their Gen 2 KM back to Dead Air to be replaced/fixed, but they were then sent the Gen 3 KM (which didn't fit) as a replacement for the Gen 2 KM because the Gen 2 KM was no longer being made at that time, so when they tried to assemble the Gen 3 KM and saw it didn't shoulder up in the Helios QD they were confused. What I wrote about on r/NFA was in response to peoples concerns about KeyMo fitment issues due to the different versions of KeyMo that were being released. The newest KeyMo mount (which I'll call Gen 3 KM) had ~.05' of material added back in front of the threads, and that extra material prevents the KeyMo from shouldering in the Helios QD because that extra material bottoms out on the internal taper shoulder of the Helios QD. Fitment issues were also occuring with other manufacturers silencers. We know it's not an issue with the CGS side of the equation since all of our parts are checked with thread gauges, and because they were rechecked when we took the parts back to see what the issue was. Soon after releasing Gen 2 KM, Dead Air then changed the design of the KeyMo mount again after there were issues reported here and elsewhere of KeyMo mounts not fitting various silencers due to male thread issues on the KeyMo mounts. The Gen 2 KM paired with the KeyMicro brake allowed you to use that specific combination of parts on the Helios QD without using the QD Adapter Ring that's included in the Helios QD kit. 275' of extra material in front of the threads (which I'll call Gen 1 KM). Dead Air released a new KeyMo design maybe four months ago, the version with no extra material in front of the threads (which I'll call Gen 2 KM), which replaced the old KeyMo design, the version with.

Keymo muzzle