My 9mm Shield came in last week (my first tupperware pistol -- couldn't resist the price after rebate), and I put in an Apex sear today.

I guess I was lucky. I expected a horrible factory trigger. After a little dry firing and with a small dab of grease on the factory sear the trigger pull averaged 5 lb. 6 oz. If I hadn't already ordered an Apex sear before the pistol arrived I might have just done some minor work on the original.

The Apex (sear only, factory springs) reduced trigger pull to an average of 3 lb. 14 oz., so right at 1.5 lb. reduction.

The trigger bar loop gap from the factory was .024", which left the trigger break and reset out a bit farther than necessary even with the Apex sear. I took the gap down to .016", which still left about .110" of overtravel measured rear of the trigger at the top (held punches behind the trigger). I wouldn't want it in much closer, and the existing amount of overtravel is tolerable.

While I had it apart I fixed the horribly stiff manual safety. I didn't do any major reshaping, just broke sharp edges and a light polish on the safety and plunger. I cleaned all the gunk out of the plunger channel. Much better now. I still may have to build up the lever a little with Acraglas.

The striker block and tunnel could use cleaning up, but after reading about how stubborn rear sights on Shields are I think I'll just let it be. The roughness isn't noticeable during shooting and doesn't seem to harm the actual trigger break. Maybe it will smooth out in time.

I fired 100 rounds of lead reloads yesterday without a hitch except for sore thumbs and fingers from loading the magazines. Those springs sure are stout. I'm looking forward to shooting next weekend with the improved trigger.