The new Timney AR Targa 2-Stage Trigger with a SHORT first stage take-up is a self-contained, 100% drop-in unit that is ready to install in your AR-15 for an exceptionally smooth, crisp, two-stage trigger pull. No gunsmithing, fitting, or adjusting required. The pull weight is factory calibrated for a two-pound first stage and a two-pound second stage. The trigger housing is constructed of military grade, 6061 T6 alloy that is CNC machined using state-of-the-art robotics and is anodized for superior durability. The hammer is wire EDM cut from S7 tool steel, combining hardness to resist wear with superior impact resistance to withstand heavy.