I just bought a new G27, that fits my hand perfect. I like everything about it, including the grip texture. I have to say, I very recently sold my Gen4 17 out of sheer frustration with the r.s.a. I love the little 27 and shoot it better than my 17. But, now I take the time to read that the Gen4 27 has a dual spring now and it will far outlast the old system. I shoot 100's not 1,000's a year. Should I be concerned? My first thought is, I'm getting away from the r.s.a. that burned me "literally" with my Gen4. I would really like some feedback from you guys.