War Dog Industries WRC-15 Advanced Lightweight Receiver SetThe War Dog Industries WRC-15 Advanced Lightweight Billet Upper and Lower set is precision cut from high strength billet 6061-T6 aerospace grade aluminum with an exceptionally lightweight design. Excess material has been removed wherever possible without reducing the integrity of the receivers, allowing this matched set to weigh in at just over 14 ounces.The lower is fully compatible with MIL-SPEC components. Featuring an integral enhanced trigger guard and receiver set tension set screw.Each receiver set is hand deburred, matched, and inspected for dimensional accuracy, ensuring you receive the highest quality set for your build.We want to offer our customers more for their money when it comes to purchasing a top of the line receiver set. Enhanced modern lightweight designs are what sets War Dog Industries receiver sets apart.War Dog receivers are sold without the markings for the safety selector that read "SAFE" and "FIRE". However, our design has in no such way altered the functionality of the trigger, safety selector, selector detent/spring placement within the standard military specification.The safety selector on our advanced lightweight lower receivers work in the same manner and function for safe, fire, automatic fire as would any other standard AR-15 lower receiver. This lower receiver, along with any other lower receiver; should always have installed lower receiver parts and components by a properly trained and licensed gunsmithThis item MUST ship to an FFL. Please see our purchasing guidelines for more information.