Optimized Carrier Key Screws - Looking for durable and reliable carrier key screws for your rifle? Check out these OCKS screws! These top-quality screws are designed to enhance the performance of your bolt carrier group and ensure smooth operation. Whether you're a hunting enthusiast or a sport shooter, these screws are a must-have accessory for your rifle.Crafted from premium-grade materials, these OCKS screws are built to last and withstand heavy usage. Eight (8) for $28 includes shipping.