For Colt Government, Combat Elite, Delta Elite, Officers ACP, and Combat Commander automatic pistols with factory original fixed sights.The professional gunsmith must use the available special Trijiconstaking tool. This staking tool will fit both .125 and .055 tang widths. Other staking tools will destroy these blades and can not be used. The .125 tang width blade can be modified by a local gunsmith to.085 to fit a Springfield 1911, but other .45 brands don't fit these blades. The Gold Cup set is a complete new adjustable sight base assembly with sapphire dots. The Gold Cup set also fits the Python and other Colt revolvers with adjustable rear blades. Bars instead of dots can be used on the revolver adjustable blades. The posts are interchangeable between rifles. An A2 post will fit on an A1 rifle.
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