Geissele Automatics 05101 SSA Two-Stage Curved Trigger with 4.25-4.75 lbs Draw Weight & Black Oxide Finish for AR-PlatformThe Geissele Super Semi Automatic (SSA) trigger is a semi automatic only version of Geissele Automaticss Super Select Fire trigger. The SSA is a non adjustable combat trigger that is a precision two stage trigger and allows precise and accurate trigger control. The two stage design allows the trigger to be light enough for accurate and precise shots, but forgiving enough for CQB.