The Stern Defense H2S Hybrid 2 Stage Drop-In Trigger Group was developed with pistol caliber carbine and defensive shooters in mind. The Stern Defense Hybrid 2 Stage trigger bridges the gap between Mil-Spec style trigger groups and high speed low drag competition triggers. The Stern Defense two stage trigger is a direct drop in replacement for your existing trigger and has endured a 250,000+ round torture test without failure. It features a smooth 2 lb first stage, leading into the positive 4 lb second stage that ends with a crisp break and predictable reset. With the duty spring in place, long gone are the days of inadvertent bump fires and failure to reset concerns so common in the PCC market when using a drop in trigger. Follow the included instructions to easily swap to the 3 pound green spring for the most solid wall and light break you have ever felt on a two stage trigger. FeaturesStandard mil-spec pin sizeUse for AR15 and AR106061 billet housingTrigger and disconnect machine...