The Luth-Ar LLC Lower Receiver Parts Builder Kit for the AR-15 is a comprehensive assembly solution for firearm enthusiasts looking to customize or build their own AR-15. This kit includes essential components to ensure optimal functionality and reliability of your rifle. Crafted with precision and attention to detail the parts offer a seamless fit and performance catering to both novice builders and seasoned gunsmiths. Ideal for those who prioritize quality and efficiency this builder kit provides the foundational elements required for constructing a dependable AR-15 lower receiver.