The Geissele Super Semi-Automatic (SSA(R)) trigger is a semi-automatic only version of Geissele& Super Select-Fire trigger. The SSA is a non-adjustable, precision, two-stage trigger and allows precise and accurate trigger control throughout a variety of conditions and usage requirements. The SSA's two-stage design allows the trigger to be light enough for accurate and precise shots, but forgiving enough for frenetic close in work. The SSA is safety certified by Crane Naval Surface Warfare Center. It is recommended for demanding applications such as Law Enforcement use, dynamic environments, and mid-range carbine work. Super Semi-Automatic (SSA(R)) Trigger Specification PLATFORM: AR15/AR10 TYPE: 2 Stage 1st STAGE WEIGHT RANGE: 2.75 - 3 lbs. 2nd STAGE WEIGHT RANGE: 1.5 - 1.75 lbs. TOTAL PULL WEIGHT RANGE: 4.25 - 4.75 lbs. ADJUSTABLE: No TRIGGER BOW TYPE: M4 Curved PIN SIZE: Mil-Spec