I have friends in the 82nd airborne, the USMC and the Rangers all of whom have told me they have seen in 2 cases and used in 1 case this weapon in house clearance training. It's not something they would take to Iraq or Afganistan but the US army and USMC (and navy...all my friends seem to have shipped off to the military lol) seems to be encouraging the troops back home and training to use old weaponry they may run across to see what it feels like and how it performs. It's the old thing about knowing your enemy. the guy in the navy who i just mentioned even said they got some range time with some old SMLEs coz the Iraqies got a load after ww2 from the Brits and apparently they still pop up quite frequently today. So to summarise it wouldn't be a stretch (and indeed i've had it confirmed to me) that the PPSh is being used by US, Navy and MC personnel for training purposes but i can't say more than that coz i simply don't know.