Gord,
You asked about Brockmans, so here are a couple pics of their Talley base/peep set up. One shows what the base and peep look like without the scope and the other shows it with the scope mounted. Once the scope is removed, the peep pops up into place. You don't have to attach anything else once the scope is removed. You can also see in the second photo what I was talking about with the quick detach ring with the lever that attaches to the dovetailed base.

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