Super Dynamic Combat (SD-C) Trigger

The Geissele Super Dynamic-Combat (SD-C) Trigger featuring an exclusive flat trigger bow, is a rugged, non-adjustable combat trigger with a sear design that provides a wide margin of safety against unintentional discharges yet still gives the operator a sharp, repeatable trigger release.
 
The SD-C is a flat bow variant of the Super Semi-Automatic (SSA®) trigger.
If you prefer a mid-point between a flat and classic M4 curved trigger, please see the Super Tricon variant of the SSA.