Description PRODUCT DETAILRelease round can be canceled by simply moving our Patent Pending selector out of Binary mode while holding the trigger back Easy to install * Smooth trigger pull: 4.5 lbs, +/- 0.5 lbs Positive reset on release phase Enhanced buffer springs for optimal flexibility Works in most AR platforms and calibers including 5.56 NATO, 308 Win, 300 BLK, 9mm, Rimfire, etc.... Compatible with any BCG Great for competition shooters, tactical shooters, and recreational enthusiasts The AR-S1 trigger comes with the straight flat-faced trigger.