The Challis Extractor is placed over the bushing and rotated until it engages the slot. It is then firmly secured to the bushing using a standard grip screw. This keeps the tool in constant axial contact and alignment with the bushing, something that is very difficult to achieve when using a screwdriver, even one made for the purpose.
This Colt Defender Bushing Extractor is made especially for removing the super-short grip bushings used on the Colt Defender and the Colt Gunsite LW Commander.
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