This AR-15 M4 5.56 | .223 Upper Receiver set features: M4 feed ramps, ejection port cover assembly, and forward assist assembly.
Product Details: AR-15 Upper Receiver Kit – 5.56
CBC has the AR-15 upper parts you need. Our AR-15 upper parts are backed by our Lifetime Warranty – if any CBC AR-15 upper receiver or upper receiver part becomes defective, we will repair or replace it at no charge. Get your AR-15 upper receivers at CBC today and save with free shipping on eligible products!