CMC Triggers 91503GF Drop-In Gold Finger Single-Stage Flat Trigger w/ 3-3.50 lbs Draw Weight & Gold FinishCMCs critical sear engagement surfaces have a proprietary machining process that renders superior surface finish and dimensional control. As compared to their competition, the techniques used to establish a 1 2 RMS surface finish as opposed to EDMing which leaves a pitty 32 RMS, compared to a mirror which is 0 RMS. CMC's innovative, self contained and easy to install AR 15 trigger groups, have been completely re tooled to maximize production