LBE Unlimited AREPS20PK AR Parts Ejection Port Cover Spring 20 Pack AR-15 Black Stainless Steel
https://www.tandktactical.com/shop/706612407540-lbe-unlimited-areps20pk-ar-parts-ejection-port-cover-spring-20-pack-ar-15-black-stainless-steel-25939
https://www.tandktactical.com/web/image/product.template/25939/image_1920?unique=a0a028f
LBE AR15 EJECTION PORT COVER SPRING PACK OF 20, Made from 302 Stainless Steel, Made in the USA
