LBE Unlimited 2 Stage Trigger, Fits AR-15, Black AR2STG High quality components and precise manufacturing make LBE parts ideal for maintaining and upgrading firearms. The durability" reliability and excellent build quality of these parts will ensure years of service you can count on. LBE Unlimited's drop in two stage trigger for the AR platform will be the perfect option to either upgrade your existing firearm or for your next build. The LBE 2 Stage Trigger Set is designed for an easy drop in assembly. It implements a self-centering disconnector for a smooth even 4.2-4.6lb. trigger pull. All critical working parts are precision ground to ensure the highest accuracy. All parts are heat treated and case hardened. This trigger set is designed for .154" pins.