Tony, In addition to the correct barrel wrench that Hugh mentioned, a good strong hydralic press (vise) with the correct brass shims if you intend to install a new barrel without maring it. Also, if you are installing a GPC barrel, you can count on having to do a final chamber ream for it to headspace properly. Particularily with these barrels, first check that the front sight base and the extractor groove line up before beginning installation, as this is not always a given. TH
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