I would have ordered the Gen 3.
I do not like the Gen 4. Interchangable backstraps:I don't need them. I do not like the grip texture and I do not care for the oversized mag release. For a lefty I completely understand the benefit of the Gen 4 so they can change the mag release to the other side.
Everyone is different some like the Gen 3 better and some like the Gen 4 better, nothing wrong with that and personally I am very glad the Gen 4 did not replace the Gen 3 and both are available. I wouldn't sweat it, the Gen 3 will serve you well.
Congrats on your purchase by the way!
Here they are side by side:THANK YOU VERY MUCH. I HAVE HEARD OF THE SAME ISSUES FROM OTHER PEOPLE BUT I THINK THAT I HAVE MADE THE RIGHT CHOOSE. NOW I JUST HAVE TO WAIT FOR JENKINS TO GET ONE IN.
ALSO DO YOU LIKE THE FIXED SIGHTS OR NIGHT SIGHTS?