I bought a Tac Con trigger when they first became available for pre sale. I found it to be the most uncomfortable trigger I had ever experienced ( in the 3rd mode). I took it out shooting once and then sold it to a guy who wanted one really bad.
My new favorite trigger is the Geiselle rapid fire trigger from Brownells. Much better trigger at a much better price.
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"No free man shall ever be debarred the use of arms. The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government"
-- Thomas Jefferson, 1 Thomas Jefferson Papers, 334