Browse our huge array of complete upper receivers and custom barrel assemblies below, including name-brand pieces. We are proud to stock M4 barrel assembly parts and AR 15 barrels. All our AR-15 Del-Ton barrel assemblies are head-spaced and test fired for quality, firing capabilities, and your safety. You will have the satisfaction in knowing you are receiving a funcional, effective, quality piece of equipment. Del-Ton uses top quality, US made, mil-spec parts. Our AR15 barrel assemblies come standard with a bolt and carrier and charging handle. Call us with any questions to take advantage of our extensive experience!