I have a G45 with Timney alpha and Vex shoe, still was not as crisp as I like. The 5.5STD tightened it up nicely. Smooth to the wall and crisp break, very nice and well worth it. G43 with ZEV trigger, the connector seems to have lightened up the pull, crisp break. Both resets were nice and short. Worth it, but I keep oredering right before 15%off&free shipping. Thanks JG. Next time Im waiting for the sale, Times aint easy.