ORIGINAL: Underclocked

Thanks for all the pics, they are an education in themselves. When you get time to respond, I notice an apparent "brass wire" looking thing running across the hinge pin - what might that be?Annnnnnd, is the receiver section made of the same stainless as the barrel (or is it some lighter alloy)?

Thanks again. It looks like a well done design. Let us know how much blowback gets down into the action and/or escapes from the barrel to action intersection.