Triggertech Legacy Special ACE Trigger System Glock Gen 1-5 2.5 - 6 lb Black. The Blackout Edition gives them the same thing but in all black. This is the first run of the Legacy Special Blackout Edition. Featuring all of the same technology as the original Legacy Special but with a consistent black color across the lever. Specifications for Triggertech Legacy Special ACE Trigger System: Manufacturer: Triggertech Color: Black Fabric/Material: CNC-Machined Stainless Steel Aluminum Trigger Shape: Flat Trigger Pull Weight: 2.5 - 6 lb Caliber: 9mm Luger .40 S&W Gun Make: Glock Gun Model: Glock 48 Glock 43X Glock 43 Finish: Anodized Weight: 0.38 lb Trigger Stages: Two Stages Features of Triggertech Legacy Special ACE Trigger System Safety Blade Maintains the OEM Glock style safety blade Frame-decoupled safety We engineered the lever and transfer bar to provide the safety function independent of frame tolerances Redesigned safety stop Updated geometry of the trigger lever broadens compatibility across real-world frame tolerances Drop Tested Extensively tested on compatible platforms the Legacy Special was engineered to deliver exceptional durability drop safety and rough-handling performance relative to SAAMI drop test protocols. Package Contents: Triggertech Legacy Special ACE Trigger System What firearm models does the manufacturer say Triggertech Legacy Special ACE Trigger System is compatible with? The manufacturer suggests that Triggertech Legacy Special ACE Trigger System is compatible with Glock 43 Glock 43X Glock 48Triggertech G9B0-SBS-26-LBBF: Legacy Special ACE Trigger System Glock Gen 1-5 2.5 - 6 lb Black