Aero Upper & Toolcraft NiB 158 BCG Combo

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.

BCG features:

Mil-spec carpenter No. 158® steel (bolt)

8620 tool steel (carrier)

Shot-peened, MPI bolt

Mil-spec extractor spring, black extractor insert & Viton O-ring

Tool steel extractor

Shrouded firing pin

Mil-spec 4130 steel gas key attached with Grade 8 hardware and properly staked

Caliber: .223 / 5.56 / 300 Blackout

Upper receiver features:

Anodized black finish

7075-T6 aluminum

A3 flat top

Forged

M4 feedramps

T-marks





Add a plain or engraved port door + forward assist kit from the drop down menu.



Choose one of our upper engraving graphics from the drop down menu.



