KNS Precision Gen ST Pin Kit Features The KNS Precision Gen ST Pin Kit replaces the standard mil-spec trigger and hammer pins on AR-15 and M16 pattern rifles with a non-rotating design. Machined from stainless steel the pins are built to resist the wear and galling that can occur with factory pins over thousands of cycles. The .154 diameter pins fit mil-spec lower receivers without modification making installation straightforward for most AR-15 builds. Non-rotating construction keeps the pins properly oriented inside the receiver reducing the chance of them backing out during extended firing strings. The side plates on these pins are duracoated in red giving the kit a distinctive look that also helps shooters quickly identify an upgraded trigger group at a glance. This finish adds a layer of corrosion resistance to the visible portion of the pins in addition to the stainless steel core. KNS Precision designs these pins to work with standard mil-spec AR-15 and M16 lower receivers giving broad compatibility across the platform. The KNS Precision Gen ST Pin Kit is a durable functional upgrade for sale at GrabAGun. KNS Precision Gen ST Pin Kit Specifications Manufacturer: KNS Precision Material: Stainless Steel Pin Diameter: .154 Side Plate Color: Red Design: Non-Rotating Compatible Hosts: Mil-Spec AR-15/M16 Available At: GrabAGun