CMC Triggers is the original manufacturer of the Drop-in Trigger Group for the AR-15/10 rifle since 2003. CMCs 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 Triggers Single Stage AR15/10 are available in configurations for Small Pin, Large Pin and M&P 15/22 Trigger in multiple pull weights and Signature Flat, Curved or Combat Curved Bow. Manufactured in the Great State of Texas. CMCs innovative, self-contained and easy-to-install AR-15 trigger groups, have been completely re-tooled to maximize production capacities, incorporate new design enhancements and reduce cost. CMCs AR-15 trigger groups have always yielded exceptional trigger pull dynamics for tens of thousands of satisfied customers.Features :Single Stage TriggerCombat Curve Bow2.5lbUltra-crisp trigger with no feel of creep prior to hammer releaseThe trigger has a glass-smooth break with no feel of grittinessTrigger pull is factory pre-set and not user adjustablePositive trigger reset allows a quick follow up shot on targetHand assembled, and hand testedTotally self-contained one-piece assembly