Right, so now that the stock is finally finished and the gas cylinder sorted out, I'm thinking about plugging in some HRA parts on my new friend. She has an HRA barrel and receiver, but all SA internals.

Does anyone know the correct number for the bolt on a 5,494,XXX? I'm supposing that the correct part number would have a good chance of headspacing correctly...right?

Just a thought. With so many SA parts I may never get around to it anyway. They are all good condition parts on what I think is a Greek return, so it isn't exactly critical...but that little voice nags...
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