Answering the demand from the nation's top 3 Gun competitive shooters for lighter Rifle Triggers with all the amazing attributes of our premium Match Grade CMC Triggers! Thanks to our multi-patented designs, a fine match grade trigger pull is now an extremely simple upgrade to implement. Install the fully self-contained, ready-to-go trigger group, safety check, and it's done. CMC Triggers is the original manufacturer of the Drop-in Trigger Group for the AR-15/10 rifle since 2003. CMC's 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 pithy 32 RMS, compared to a mirror which is 0 RMS. Specifications for CMC Triggers AR-15/AR-10 Single Stage Drop-in Competition Trigger: Manufacturer: CMC Triggers Trigger Material: Steel/Aluminum Trigger Pull Weight: 2.5 lb Trigger Pin Size: Mil-Spec Gun Model: AR-10, AR-15 Condition: New Length: 7.15 in Height: 1.05 in Features of CMC Triggers AR-15/AR-10 Single Stage Drop-in Competition Trigger: Ultra-crisp trigger with no feel of creep prior to hammer release The trigger has a glass-smooth break with no feel of grittiness Trigger pull is factory pre-set and not user adjustable Positive trigger reset allows a quick follow up shot on target Hand assembled, and hand tested Totally self-contained one-piece assembly Package Contents: CMC Triggers AR-15/AR-10 Single Stage Drop-in Competition Trigger