So I am back to Glock after I finished my two M&Ps and picked up a new 19 about a week ago. I took it out last weekend and fired 150 rounds of blazer 115gr. And had erratic ejection but no malfunctions. I replaced the crappy extractor with one I had from about 5 years ago and the erratic brass to the face quit. I replaced the gen.4 trigger and trigger bar to a gen.3 smooth and did the .25cent trigger job and all is well. I am firm believer that the newest crappy extractor has a lot to do with these problems we hear about but I am sure you know that Glock 19 is a tkw... Serial prefix and was factory fired last month.