Basically HK416 is 5.56 and 417 is 7.62 NATO. Pardon me but I don't quite get what do you mean by state side, can you please elaborate?
Umarex also sells HK417 AEG, which is made by VFC. They utilise different gearbox though, but roughly 90% parts are the same V2 internals
Umarex also sells HK417 AEG, which is made by VFC. They utilise different gearbox though, but roughly 90% parts are the same V2 internals