I don't recall seeing the option of the modern Spanish 2" guns mentioned. Arrieta made some. I believe AyA may have as well. And they're proofed to the same standards as a CIP "standard proof" gun. The negative is that they're heavier than the original Brit 2" guns, usually right around 6 pounds. If you look a bit, you can find 2 1/2" (and even the occasional 2 3/4") Brit 12 that light. So if you're going after a 2" gun for reduced weight, they don't make much sense. But if you believe the 2" load possesses some sort of magic, I guess it would make sense . . . but then you could also just buy the shells and shoot them in a very light 2 1/2" or 2 3/4" 12.