Got my P226 back from SIG after having the E2 grips put on and the SRT mod. The gunsmith comments state "Breech face shows gap checking from shooting reloads". My question is....what the heck is he/she saying? Yeah, I shoot reloads, but what is gap checking? Is it bad?...I assume as it's worthy of mention, I should at least understand what it means! That aside. Looks like they did a good job. Already like the E2 grips and I have not shot the pistol yet. They have a nice texture that seems a lot more grippy. The drop in grip volume suites my hand size too. Really looking forward to shooting this now to see how the SRT and grips change things.