Geissele Automatics Single-Stage Precision M4 Curved Bow, Black Finish 05-400 The Single-Stage Precision (SSP) is Geissele Automatics' first true single-stage trigger for the AR Platform. This drop-in trigger has no take up and a super clean break. The reset is short yet still distinct" giving excellent feedback to the shooter during target engagement. Combining these two capabilities provides the shooter with the confidence necessary when precision and accuracy are essential for the task at hand. The SSP features superior materials and the most modern manufacturing techniques. The SSP trigger is made from S7 Tool Steel and precision machined from the latest wire EDM technology. All parts are finished in durable corrosion resistant black oxide. The Geissele SSP is a precision trigger" engineered for maximum reliability and repeatability while engaging targets at long distance" whether it's being used during duty" hunting or target shooting.