Apex Tactical Glock Extractorby Tim Lau, courtesy Modern Service Weapons
"...For thirty years, Glock 9mm handguns have been nearly synonymous with reliability, but recently, many Glock owners have been suffering from erratic and sometimes failed ejection with their Glock 9mm pistols. Numerous theories populate the various Internet gun forums, but so far there has been no definitive answer from Glock as to the cause, or a solution. Glock Customer Service responses range from total denial, instructions to send the gun in for repair, or sending out replacement parts to local armorers.
It seems the erratic ejection issues appeared somewhere around the “M” serial number prefix in the Gen 3 9mm pistols, and possibly affect all Gen 4 9mm guns.
One popular “fix” is to obtain the latest Gen 4 9mm ejector (Part Number 30274), which for most people, seems to make ejection a little more consistent but doesn’t always solve the problem. Others recommend the HRED extractor plunger assembly by White Sound Defense, but this product did nothing for me..."
Apex Tactical: http://www.apextactical.com/