i installed the glock elite evo on my gen 4 glock 17 yesterday, , freezing here in PA. but had to get the Glock out and shoot 50 rnds thru it, this is my evaulation, see what your take is, trigger is much better, not too thrilled about the pre travel, but i am not sure what i noticed on one of the shots during my 50 rnd test, there was one shot where there was a lag like maybe the trigger resetting of some sort, cant put my finger on it, thought it might have been a light load, of the 50 rnds i was shooting there was 4 or 5 different loads, i was thinking i might have to take another .005 off the tab that i had to fit, but not sure. it works slick when i try it in the basement, i did not try rapid fire, but i had my ruger sr9c with me and i felt the ruger would shoot off rounds quicker, now my wifes ruger lc9s is very fast, maybe due to the shorter cycle or less mass weight. , are these glocks supposed to be a fast cycling gun to start with, never fired a glock before. this is my first glock and only have maybe 150 rnds thru it, i did not change the fp spring yet still have the stock one in it. any thoughts, i was shooting mainly the extreme plated 124 RN, with 4.0 of titegroup, with an OAL of 1 140 thanks Chet