The extractor is of the Gibbs style two piece design. In my single shot falling block, it works well enough to act as either an extractor, or with enough authority on the underlever, as an ejector. The double design will allow for more travel and length on teh extractor, so it should work even better. The trigger group will be fixed to the trigger plate , which I have also gone to on my little doubles.

Curl,

I've not handled the Hagn double, but have read the article several times. It affirmed my resolve to build one on my own design.