The TriggerTech Certified Special is a monolithic trigger featuring a pivot safety for a clean engagement, encouraging consistent trigger breaks. The trigger is USPSA approved, and permitted in IPSC Standard, Optics, and Open divisions. The trigger also features an updated backplate with a relief pocket that increases clearance to the striker under extreme shock conditions. No changes were made to the Sear module. Taken together, these updates deliver a significant improvement in drop safety and impact robustness for the ACE Trigger System. Product Features Frame-decoupled safety - Engineered the lever and transfer bar to provide the safety function independent of frame tolerances. It's now fully within our manufacturing control. Redesigned safety stop - Updated geometry broadens compatibility across real-world frame tolerances. TMDE pad - A small feature on the lever module that helps range officers verify the lever safety is functioning properly. DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.