KNS Precision Non-Rotating Pin Kit Gen JJ Features The KNS Precision Non-Rotating Pin Kit replaces the standard trigger and hammer pins with a non-rotating design which prevents the pins from spinning in the lower receiver during repeated cycling. Over time standard pins can wear the receiver holes as they rotate and the KNS fix locks the pins in place so that wear is eliminated at the source rather than managed after the fact. The stainless steel construction resists corrosion and holds a sharp fit over years of use keeping the trigger group feeling tight even on a rifle that sees heavy round counts. The black nitride treated sideplates finish the kit in a durable black coating that matches the black finish of the rest of the build. This Gen JJ configuration is sized at .154 diameter and built to fit mil-spec AR-15 and M16 lower receivers without modification making installation straightforward for anyone comfortable with basic armorer s tools. The Jesse James pattern this kit follows is a well known upgrade path among AR builders looking for a more positive consistent trigger pull feel. Because the sideplates control pin rotation directly shooters often notice a cleaner more repeatable trigger break after installation. The KNS Precision Non-Rotating Pin Kit is a simple targeted upgrade for anyone building or refreshing an AR-15 lower. KNS Precision Non-Rotating Pin Kit Gen JJ Specifications Manufacturer: KNS Precision Model: Non-Rotating Pin Kit Gen JJ Material: Stainless Steel Color: Black Size: .154 Compatible Hosts: Mil-Spec AR-15/M16 Available At: GrabAGun