Sakamoto said:
You'd have to design a whole new gun. The simple blowback system the Skorpion uses wouldn't work with larger calibers.
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I don't know about that, the blowback system did just fine with the Thompson in .45 ACP. But obviously I was kidding, whether 10mm or .45 I think a Skorpion in that caliber would be rather difficult to control on full auto. Break your nose and miss your target!
Did you build the Skorpion yourself, or just purchase and mod it later on? I personally prefer to build my own firearms, if at all possible. You appreciate and respect them more, and you learn every component of your rifle. I personally like firearms, but I like working with tools more.