Introducing the Star lock Washer, meticulously engineered for optimal performance with 1/4 inches pistol grip screws on AR-15 and AR-10/LR-308 platforms. This precision crafted component is designed to provide superior locking power, ensuring your firearm's grip remains securely fastened under the most demanding conditions. The star-shaped design offers enhanced resistance to loosening caused by vibration and recoil, making it an essential addition for both professional gunsmiths and firearm enthusiasts. Constructed from high-quality, corrosion-resistant materials, this lock washer guarantees long-lasting durability and reliability. Upgrade your firearm assembly with confidence, knowing that the Star lock Washer delivers exceptional stability and performance.