Dickson made a few 'side opening' O/U guns. I believe that D Mackey Brown's O/U is an easy opener (assisted opening) gun. A true Self Opener springs open whether the locks are cocked or not. Purdey and Henry Atkin come to mind.

Also, Lancaster offered a Spring Open boxlock not patterned on the ANSON & DEELY action. Pretty cool, but I have never seen a 'best' version of the gun... always 'colonial' models.

C Man
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