The Lantac .223/5.56 Bolt Ejector Kit provides a durable, steel constructed ejector, spring, and spring pin that are perfect for a new build, upgrading parts or just to have extra replacements on hand. Designed for .223 REM and 5.56x45mm and fits AR-15 / AR-10 models.Features: Includes ejector, ejector spring, and ejector spring pin Steel construction Fits AR-15 / AR-10 Made in the U.S.A.Lantac USA manufactures the highest quality accessories for AR-15/M16 pattern rifles. Precision made in the U.S.A., rifles, muzzle brakes and more.