Barrel forward, three leaf spring left finger is Sear pressure, centre finger is Trigger bow AND disconnector, the right finger is the grip safety. Tuning of the leaves involves small change s in the bend of left and centre fingers. Without the sear and hammer in the gun, the centre finger should be adjusted to two to two and a half pounds for a safe trigger. The left finger in conjunction with stoning the sear and hammer - NOT freehand but in the proper jigs - can then yield a three to five pound trigger. Test is to hold the grip safety in, and drop the slide using the slide release. Do it twice with the pistol horizontal and twice with the barrel pointed down to "prove" the setup. Hammer must never fall.