The Tapco TAP22035 Drop-In Black Straight Trigger is designed for AR-15 rifles, offering a single-stage trigger with a pull weight of 3.5 pounds. This trigger allows for easy drop-in installation, eliminating the need for a gunsmith and making it a convenient upgrade for your firearm.Key FeaturesPull Weight: 3.5 pounds for a responsive trigger feel.Installation: Easy drop-in installation, no gunsmithing required.