Re: sig 1911 22 vs GSG 22
They are indeed the same gun. I bought the Sig, only because if I decide to sell it down the road it may sell easier having the Sig name.
Mine has ran flawlessly, though I probably only have 200 rounds through it.
If you get either, they take the same magazine, so if you buy spares find the GSG brand. They normally sell cheaper than the Sig branded magazine.