The Kak Industry AR-15 Missing Parts Kit is designed to keep your rifle builds smooth and hassle-free by providing all the small components that commonly go missing or need replacement. This comprehensive kit ensures you have a ready set on hand for friends, field repairs, or emergency scenarios, so you can complete assemblies without delay. It includes carefully selected parts such as one buffer retainer, four takedown/pivot detents, two selector detents, two selector/ejector detent springs, two disconnector springs, six takedown/pivot pin detent springs along with one buffer retainer spring, two bolt catch springs, and one bolt catch detent, all manufactured in the USA to meet strict quality standards. Whether youre assembling a new build, repairing a worn section of your existing rifle, or upgrading your LPK components, this kit covers the essential detents, springs, and retainers that keep your AR-15 cycling reliably and safely. The AR15-LP-KT-04 model designation reflects a precise, purpose-built collection that aligns with long gun parts and lightweight assembly needs, making it an ideal companion for professional builds, hobbyists, and range days alike.