I know for sure that the shotguns are from the "relatively crappy" level of airsoft equipment.(shrug)
No biggy... I still think that someone needs to design and distribute a new air powered airsoft gun...none of this green gas crap or heavy blowback gas suckers (There is a mini uzi out on the market that has such a heavy bolt that is uses almost an entire 12gram to shoot about 50bb's...piss poor efficiency).
I had thought about converting a sheridan pellet pistol to 6mm so that I could use it as a high power sniping airsoft pistol...just didn't happen.