This Geissele Super Dynamic 2 Stage Trigger is rugged with a sear design. Featuring an exclusive flat trigger bow, these Rifle Triggers by Geissele provide safety against unintentional discharges. This non-adjustable Geissele Automatics AR15/M4 Trigger gives the shooter a sharp, repeatable trigger release, compatible with standard mil-spec pins. For a trigger that enhances your experience, choose the Geissele Super Dynamic Combat Rifle Trigger.Please note, these triggers are designed for mil-spec AR15/M4 carbine rifles. Our AR15 triggers are not compatible with the Sig MPX/MCX weapons or Pistol Caliber Carbine AR15/M4 variants. Using them in these platforms will void the warranty.Specifications for Geissele Super Dynamic AR-10/AR-15 Combat Trigger:Manufacturer:GeisseleColor:BlackTrigger Shape:Tactical FlatTrigger Pull Weight:4.5 lbTrigger Pin Size:Mil-SpecHand:AmbidextrousGun Make:AR PlatformGun Model:AR-10, M4, AR-15Gun Type:RifleIncluded Accessories:StandardCondition:NewFeatures of Geissele Super Dynamic AR-10/AR-15 Combat Trigger:Type: 2 Stage;1st Stage Weight: 2.5lbs;2nd Stage Weight: 2.0lbs;Total Pull Weight: 4.5lbs;Adjustable: NoPackage Contents:Geissele Super Dynamic AR-10/AR-15 Combat TriggerGeissele 05-165: Super Dynamic AR-10/AR-15 Combat Trigger, Tactical Flat, 4.5 lb Pull, Black