This week's episode was glorious
We finally get to see why everyone fears Pitohui. Using a variety of weapons is apparently more than just a quirky habit observed by LLENN. She's good with all of them, and is also utterly lacking in scruples.
The last scene with LLENN, Fukaziroh and Clarence was pretty damn funny, with LLENN granting Clarence's request for a kiss so as to not look completely bad regarding taking her spare ammunition at gunpoint.
I did a quick search on the AR-57 after watching, and it's apparently a real modification of the AR-15 to take P90 magazines and 5.7mm ammunition.