I bought my first gen 4 glock17 in Oct 2010, and enjoyed shooting it. I took that glock to many classes besides shooting at the range with no issues. I enjoyed shooting my first gen 4 a lot so i picked up another one Yesterday. When i got it home, I noticed there is alot of slop from the slide and Frame. When i was practicing trigger control by dried firing it, i can feel the slide and frame move when I pull the trigger back. I checked with my other gen 4 and the play is no where as bad as this new one. Was wondering is this do to sloppy tolerances or it will get better when i break the gun in.