Lower Receivers serve as the foundational framework for any AR-15 or AR-10 rifle, embodying the heart of your firearm where customization begins. KAK Industry offers a broad array of options, including AR-15 Lower Receivers for those seeking the versatility and customization AR-15s are known for. These receivers are the canvas for your firearm, allowing you to incorporate AR-15 Parts that match your specific shooting style and ergonomic preferences. Whether you're building a rifle from the ground up or upgrading an existing platform, KAK Industry ensures your project starts on a solid foundation. FeaturesMachined from Quality USA Produced 7075-T6 ForgingsM4 Style Fire Control Group PocketType 3 Class II Hard Coat Anodized-Deep Matte BlackThreaded for Upper Receiver Tensioning ScrewPictogram Selector Markings on Both SidesAccepts all Mil-spec Sized Lower Receiver ComponentsFlared Magwell for Faster and Easier ReloadsCaliber- MULTI