Our Stag 15 Stripped Lower Receiver is the only way to start your Stag 15 build. Made to Mil-Spec standards, our stripped lower receiver is second to none in quality and works with Mil-Spec AR15 parts & components.Federal law requires this product to be transferred through a licensed FFL dealer. Stag Arms requires a copy of the dealer 's FFL for verification. It 's the customer 's responsibility to notify the dealer of the order.