The Tiger Rock Inc. DC223-U6 223/5.56 Rifle Dust Cover Complete Assembly is a vital accessory for AR-15 owners seeking ultimate protection and efficiency. This assembly shields the ejection port from harmful dust, debris, and moisture, safeguarding internal components during transport and storage. High-quality Ejection Port Cover Door for effective protection Durable steel spring ensures smooth operation Robust steel rod enhances stability and security C-clamp included for quick and easy installation Crafted specifically for 223/5.56 caliber rifles Upgrade your firearm today with the Tiger Rock DC223-U6 and secure your AR-15's longevity and performance.