Luth-AR Lower Receiver Parts Kit - AR15. It requires precision strength machining as well as critical thinking and a high degree of accuracy. Luth-AR AR Lower Receiver Parts Kit will help you build or rebuild your AR. All the parts come from a high quality manufacturer and one of the best AR parts suppliers in the business. Luth-AR works tirelessly to find the best and highest quality parts for your AR. If you are looking for the best place to buy AR Parts then look no further. We have you covered. Also check out our selection of Luth-AR AR Parts and other quality name brands. Specifications for Luth-AR Lower Receiver Parts Kit: Manufacturer: Luth-AR Color: Black Fabric/Material: 17-4 SST/Mil-Spec Steel Gun Make: AR Platform Package Contents: Luth-AR Lower Receiver Parts Kit Luth-AR LRPK-1: Lower Receiver Parts Kit - AR15