Achieving an optimal claw to breech face dimension is a key ingredient in getting consistent extraction and ejection from your 1911. Once you've set a pistol up for optimum claw to breech spacing and see what it does for the consistency of ejection, this will be a service you'll offer to every customer. There are various places in the design and manufacture of a 1911 pistol where "float" occurs in dimensions and tolerances. One of the places that this shows up and causes problems is with the distance between the extractor claw and the breech face. Easily measured with common feeler gauges, when your gap exceeds .070" - .075", the front side of the extractor Mfg: Harrison Design & Consulting