Interdashing
I received mine earlier today so I took it apart for shits and giggles and found that it was a bit different than the drawings posted by >>64104971. I got an actual Rarebreed branded FRT so looks like they've run out of DTT stock.
Instead of the hammer pushing the trigger down directly by the reset bump (58) it looks like when the hammer comes down the top of the hammer sort of wedges the trigger bump back which levers the trigger forwards.
This means that unlike posted patent drawing the hammer and reset bump are both the same thickness as the L2 (or whatever the original 2-position FRT is called) and the disconnector is even the same-ish thickness as one from a milspec trigger group, just that it's offset when it catches the hammer.
Also because it forces the trigger reset right after firing instead of relying on the return energy of the BCG and buffer like the SS styles I believe it would be less sucseptable to trigger reset failures.
I like my Atrius but just seeing the L3's gut makes me infinitely more confident in its reliability.
It's cool stuff.