I compare the factory Glock LCI “Dip” extractor to a pre-production prototype of the Apex Tactical Glock Extractor. The Apex Glock Extractor was produced to address the erratic ejection on many current production 9mm Glocks. Some guns are not only exhibiting erratic ejection patterns but are also malfunctioning.
This extractor test was originally designed to test the 1911 Extractor. It does not necessarily apply to Glocks directly, but does indicate whether or not the extractor is at its optimal function. Read the blog post at 10-8training.blogspot.com for further information.