The Geissele Super Sabra is a drop in replacement for the OEM Fire Control Group (commonly called the "Trigger Pack"). The Super Sabra provides a precision two-stage trigger pull and allows precise and accurate trigger control. Geissele's two-stage design allows the trigger to be light enough for accurate and precise shots, but forgiving enough for close quarter combat (CQB). The Geissele Super Sabra also features an adjustable first stage, which will allow the shooter the ability to fine tune the first and second stage weight distribution, without compromising the total pull weight.