I have a fairly new G17 and I'd like to improve the trigger pull. So.... I order some parts from Midway which arrived today. Here's the parts list... Order Information ZEV Technologies PRO Connector Product #: 113150 Price Each: $14.25 Qty: 1 ZEV Technologies Firing Pin Safety Product #: 399598 Price Each: $19.00 Qty: 1 ZEV Technologies Competition trigger spring Product #: 611080 Price Each: $3.30 Qty: 1 So I first measured the pull as it is now, I have done some stoning with an Arkansas stone of the trigger areas so the pull right now is a little better than when I started out. I used a Lyman digital pull gauge. Original Parts 5 lb 15 oz Avg of 5 pulls (all of these are 5 pull averages) In each case below (except the last one), I took out the test device and went back to stock with only the one new ZEV device installed. with ZEV Firing pin safety button $19.00 - 5 lb 16 oz with ZEV trigger spring $3.30 - 5 lb 8 oz with ZEV connector (3.5 lb) $14.25 - 4 lb 8 oz (This gadget made the most difference!) with ZEV button, spring and connector $36.55 - 4 lb 8 oz Which once again proves that the button & spring really don't improve the pull but it is much smoother with them in there so I left them in. With all the above AND more stoning of surfaces - 4 lb 4 oz. So I left it at that. It's not bad, not the best trigger I've got by far but not nearly as nasty as it was stock and dry. I thought this might help someone else who is thinking of doing the same thing.