Aero Slick Side Upper & Toolcraft NiB 158 BCG Combo

This combo package brings together the durability and best-in-industry quality of the Toolcraft Nickel Boron bolt carrier group and a slick side assembled upper receiver from Aero Precision. The Toolcraft BCG features a shot-peened and MPI-tested bolt and all of its components are pre-polished, plated by UCT and then polished again for a high shine. The Aero Precision upper features a black anodized finish for a durable, sleek look and includes T-marks. An RCA adjustable gas key can be included with your kit. Review the specs below and save big with this assembled upper receiver and BCG kit!

Toolcraft BCG features:

Bolt made of mil-spec carpenter No. 158 steel

Carrier made of 8620 tool steel

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

Tool steel extractor & shrouded firing pin

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

Caliber: .223/5.56/300 Blackout

Shot-peened and MPI-tested

Aero upper receiver specifications:

Anodized black finish

Forged from 7075-76 aluminum

M4 flat top

M4 feedramps

T-marks

Have us engrave your port door and/or upper receiver. Choose your graphics from the drop down menus.