This combo set of an Aero Precision anodized black upper receiver and Toolcraft Nickel Boron bolt carrier group is the perfect way to save money without sacrificing quality. Forged from 7075-T6 aluminum, the stripped upper receiver has a durable, precision machined design that's lightweight and reliable. Pair that with a Nickel Boron bolt carrier group made from mil-spec carpenter No. 158® and 8620 steel, and you have an unbeatable combination. All Toolcraft BCG components are pre-polished, plated by UCT and post-polished for an unbelievable shine.
Upper receiver features:
Add a plain or engraved port door + forward assist kit from the drop down menu.