Beats me. I'm just saying that the POLYCARB lower is virtually indestructible. I dunno about the rest of the gun - I did test fire/play around with a few of Frank's Cansofts a few months ago and was happy enough with them. Then again, what do I know about AEG's? As long as it shoots, I'm happy.
I am indeed a bit of a clone whore, and am still sticking to a JG for my HK416... but just not a Cansoft one.