Designed specifically for use with .223 caliber and 5.56 caliber ARs and made from durable, high-quality materials. It is used to secure the extractor in place and is an essential component of your AR’s firing mechanism. Luth-AR’s .223/5.56 extractor pin is easy to install and is compatible with .223 caliber and 5.56 caliber ARs. Whether you are replacing a worn or damaged extractor pin or just looking to upgrade your AR, Luth-AR’s .223/5.56 extractor pin is a reliable and effective choice.