The AR-15 Ejection Port Dust Cover, model AR15_EJECTION_PORT_COVER_SPIDER_BIOHAZARD, from AR-15 Ejection Port Covers, features a striking spider and biohazard symbol laser engraving. This durable aluminum cover adds a custom look to your AR-15. Protect your rifle's action from dust and debris with this easy-to-install upgrade. Perfect for enthusiasts who want to personalize their firearm.