CMC Triggers Drop-in Flat Trigger Kits for Gen 4 Glock 40SW. CMC Triggers designed these Pistol Triggers with a downsized geometry that creates a more ergonomic structure allowing you to get a more comfortable grip on the trigger with no obstructions. Each CMC Triggers Drop-in Flat Gen 4 Glock Trigger Kit has the superior traits from the AR platform but available for your pistol. Install this CMC Triggers Drop-in Signature Flat Gen 4 Glock Trigger for smoother pulls and maximum reliability when taking down targets. Specifications for CMC Triggers Drop-in Flat Trigger Kits for Gen 4 Glock Trigger Assembly: Manufacturer: CMC Triggers Trigger Shape: Tactical Flat Gun Make: Glock Trigger Installation Type: Drop-In Features of CMC Triggers Drop-in Flat Trigger Kits for Gen 4 Glock Trigger Assembly: Patented "Signature Flat" trigger design Downsized geometry All of the superior traits from the AR platform are replicated in these triggers Package Contents: CMC Triggers Drop-in Flat Trigger Kits for Gen 4 Glock Trigger Assembly CMC Triggers 71801: Drop-in Flat Trigger Kits for Gen 4 Glock 40SW