Crappy cell phone pic but here's my most unique one. It was a little temperamental at first but I received a bad mag block with the upper. Ever since they replaced it it has run great even with the 1950's ammo.
7.62x25 Tokarev DI upper.
DPMS .223 lower with a mag block for the PPS 43 mags. I have to cut a notch in the mags for the AR mag catch.
Spikes battle trigger. I was getting some light strikes with the JP trigger on the surplus ammo.
Primary Arms red dot.
I bought all the surplus ammo I could when it was available and am sitting on 11,000+ rounds of cheap ammo for it.