JG 9 Billet 9mm stripped Upper Receiver w/LRBHO.
Other Specifications and Features of the Billet JG-9 Upper with LRBHO are:
Machined from 7075 T6 aircraft grade billet aluminum
Matte black hard-coat anodized per Mil 8625 Type 3 Class 2
Compatible with all standard AR-15 / AR-9 components and most aftermarket parts