I too have had some issues with some parts not being totally drop in or slightly out of safe specs. Plisk speaks the truth, the average end user may not know exactly what would be considered safe for sear and safety bar fitment. Alot of people here WOULD be able to do it themselves but some may not and not knowing the OP's skill level and understanding of firearms function referring him to the Sig factroy or a Sig certified armorer is only the smart thing to do.
And there is no online armorers course if you want factory certification.
Another thing to consider if you don't have the factory or a certified armorer do it is that changing some parts yourself will void your factory warranty
And there is no online armorers course if you want factory certification.
Another thing to consider if you don't have the factory or a certified armorer do it is that changing some parts yourself will void your factory warranty

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