CMC Triggers AR-15/AR-10 Rifle Single Stage Drop-in Trigger Tactical Flat 3.5 lb Pull Large Pin. CMC's critical sear engagement surfaces of their Rifle Triggers 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 Rifle Single Stage Drop-in Trigger: Manufacturer: CMC Triggers Color: Black Trigger Pull Weight: 3.5 lb Gun Model: AR-10 AR-15 Gun Type: Rifle Condition: New Trigger Installation Type: Drop-In Features of CMC Triggers AR-15/AR-10 Rifle Single Stage Drop-in 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 Minimal lock time is designed into the assembly using controlled hammer weight and balance activated by a rocket wire hammer spring assuring repeatable function with either commercial or military grade ammunition 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 Easy to install Package Contents: CMC Triggers AR-15/AR-10 Rifle Single Stage Drop-in Trigger What firearm models does the manufacturer say CMC Triggers AR-15/AR-10 Rifle Single Stage Drop-in Trigger is compatible with? The manufacturer says that CMC Triggers AR-15/AR-10 Rifle Single Stage Drop-in Trigger is compatible with AR-15 AR-10CMC Triggers 91507: AR-15/AR-10 Rifle Single Stage Drop-in Trigger Tactical Flat 3.5 lb Pull Large Pin 91507