Daniel Defense A4 Upper Receiver Assembly is ready for your custom build. Precision machined in our state-of-the-art manufacturing facility and backed by our Satisfaction Guarantee.
7075-T6 Aluminum Mil-spec Type III Hardcoat Anodized M4 Feed Ramps T-Marks Polymer Ejection Port Cover Forward Assist DD Logo Laser Engraved on Left Side Made in the USA!