TriggerTech, Legacy ACE Trigger System, Glock 17/19 Gen 1-5, Flat, Black

Legacy Special ACE Trigger System for Glock

A Revolution in Glock Performance

The ACE Trigger System for Glock pistols is a breakthrough in trigger performance, reliability, and safety. This is not just an upgrade — it redefines what your Glock is capable of.

Why You’ll Love It

• Unmatched Performance Gains: The ACE Trigger System delivers the largest margin of improvement of any product we've ever launched

• Fully Tunable Feel: Adjust break weight and reset to your exact preferences

• 1911-Inspired Precision: Designed to feel like a high-end 1911, with a pull weight range of 2.5–6.0 lbs

• USPSA and IPSC approved

• Engineered with everyday carry and duty applications in mind, the Legacy Special has demonstrated strong drop safety and rough-handling performance, and was able to pass applicable SAAMI drop test protocols in internal testing with a wide margin of safety when set to 3.5 lbs

• Trigger configurations below 3.5 lbs are intended for controlled competition and range use only and are not recommended for carry or duty applications

Engineered for a New Standard

The ACE Trigger System completely reimagines Glock trigger mechanics by eliminating the parasitic movements that plague standard designs.

Key Design Innovations:

• Separate Disconnect Module (backplate) and Sear Module — not a one-piece connector

• True pivoting firing pin safety eliminates grit and drag

• Patented Zero Creep Technology™ for an exceptionally crisp break

• CLKR Technology™ lets you fine-tune pull weight with precision and confidence

Fully Modular. Fully Adjustable.

The ACE Trigger System includes three modular components:

• Lever Module

• Sear Module (with CLKR Technology™)

• Disconnect Module (backplate)

Customize to your liking:

• Ships with heavy lever take-up spring pre-installed

• Includes light take-up spring and plunger safety spring

• Combine spring sets and use the CLKR screw to dial in your ideal feel and set your pull weight between 2.5–6.0 lbs

Built to Perform. Built to Last.

Every ACE Trigger System is built using premium materials and protective coatings, chosen for durability in harsh conditions and extensive use with no degradation in reliability.

• Zero Creep Technology™ is contamination-resistant and built for long service life

• Field-tested across high round counts and diverse environments

Safety-First Design

The Legacy Special gives users the familiarity of the Glock style safety blade, without compromising the performance you expect from TriggerTech.

Main features:

• 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

The trigger's Disconnect Module (backplate) also includes a relief pocket that increases clearance to the striker under extreme shock conditions.

What’s Included

• Legacy Special ACE Trigger System (3 Modules)

• Light + Heavy Lever Take-Up Springs

• Light Safety Plunger Spring

• Pin Tool

• 5/64" Allen Key

Compatibility

Compatible with Glock Gens 1-5* in standard frame 9mm and .40 S&W only. The models are: 17, 17L, 19, 19x, 22, 23, 24, 26, 27, 34, 35, 45 and 47.

*Gen 5 requires removal of small tab on the frame (see instructions)

Use only with OEM Glock firearms and components (including standard OEM Glock magazines). We cannot guarantee compatibility with aftermarket components.

Not compatible with Gen V and Gen 6.

SPECS

• Weapon Platform: Glock standard frame Gen 1 – 5* in 9mm and .40 S&W

• Trigger Lever Type: Flat Straight

• Trigger Action: Two Stage

• Zero Creep™: Yes

• TKR Technology: Yes

• CLKR Technology: Yes

• Pull Weight: 2.5 lb – 6 lb

• Safety: Blade Safety

• Hand: Ambi

• Warranty: Product Lifetime

*Gen 5 requires removal of small tab on frame (see instructions)

Installation Note

The installation guide is directed to experienced gunsmiths who understand the workings of their Glock pistol. If you do not have these skills, we strongly suggest you retain the services of a competent professional gunsmith to install your trigger, and perform all important safety checks. Improper installation may compromise safety and void warranty.