Just got a blue label Gen 4 19 with my GSSF coupon - date on the spent casing is 2/2012. I just returned from putting 300 rounds of Federal/Walmart 115 grain, 200 rounds of hand loaded 124 grain, and 100 rounds 147 grain Ranger T. I am happy to report ABSOLUTELY NO PROBLEMS AT ALL. 0. I am happy. Looks like Glock finally got it together... We shall see.