Walked out with a Gen 4 GLock 23 :) I really did have every intention of buying the 642 but my local shop had them on sale and were out. The upside is they gave me a rain check on it so when they come back in stock I cant get one for the sale price. I took my new 23 to the range, gave it a quick clean and put 200 rounds through it. VERY nice shooter. I have to admit that the dual recoil assembly does lighten up the .40 a noticeable bit. The gen 4's are also very comfortable in my hand as opposed to the gen 3's which I felt were designed for some other species. Overall I am very impressed. I can see this quickly becoming my cooler weather carry and my SP-101 becoming my warm weather carry. And the best part about it is I already of a CBST to fit it!