When accuracy, perfection, and reliability matters, ODIN Works Billet Upper will give you a distinct advantage. Designed without a forward assist and including a low profile brass deflector, you won't blend in with everyone else on the range. Made out of 7075-Billet Aluminum, the single stock of extruded aluminum allows for tighter tolerances, ensuring better accuracy and reliability.If your wondering whether or not to go with forged or billet and aren't sure, don't get caught up in the lengthy forums. The difference is simple. A forged receiver is formed by casting, and a billet receiver is machined from a single stock, or block of aluminum. Each has it's benefits, but a Billet Receiver has the ability to be machined with tighter tolerances and a more intricate, aesthetic and sleek finish. FeaturesMachined out of 7075 Billet AluminumNO forward assist-slick sideLow profile brass deflectorDust cover included