Mr. Nash, that's a good explanation and comment. It caused me to go back and look at some of my British pinfire doubles. I think I looked at about six. All , including a Dougall Lockfast design, had the triggerguard and decorated tang in one piece. One, a Harkom, had a separate triggerguard and it appears to be attached at the rear with some sort of "blind screw". You are correct , it is really nice to see these guns sort of side by side so that the differences pop out.

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