B.A.D Gold Features Battle Arms Development AR-15 Adjustable Frictionless Trigger designed by Trigger Tech features a repeatable user adjustable trigger pull from 2lbs to 5lbs with click feedback indications. The short two stage action is designed to feel like a 1911 trigger all of which is contained within a 6061 aluminum anodized housing. This one piece drop in unit does NOT come with trigger and hammer pins. You must purchase them separately to complete the install or reuse your existing pins. B.A.D Gold Specifications Battle Arms Development B.A.D AR-15 Adjustable Frictionless Trigger 628-451-489139 One Piece Ar-15 Drop In Trigger System Produced by TriggerTech Curved Trigger Shoe Adjustable Trigger pull from 2lbs to 5lbs Frictionless Release Technology Short Two Stage Action Enhanced Reset Control Leading to sub .030 reset Optimal hammer spring and geometry for high performance All Stainless Steel 440C internal components with 6061 aluminum anodized housing Straight drop-in to .154 Pin (small pin) AR-15 Lowers Note: Will not fit .169 Large Pin Colt Lowers Does NOT include trigger and hammer pins