Thanks, is it more Pistol size than rifle?Kind of hard to tell as it's pretty crusty.
But I do notice a couple distinctive features. It's unusual for such a small "flat" where it would cover the pan. That and the hump between the pivot and the pan cover might indicate it was a weatherproof style pan.
Below is a Henry Nock pistol. Similar. And it would be of a similar size to yours.
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