Aero Precision M4E1 Upper Receiver + Black Nitride BCG Combo

Aero Precision Gen 2 Stripped Upper Receiver

Aero Precision's new Gen 2 7075-T6 Forged, Stripped Upper Receiver gives you that angled billet look without the high cost or the fitment issues many builders experience when trying to mate a non-matching billet upper/lower receiver. Aero precision has machined this stripped upper to accept a standard AR-15 barrel nut and mil-spec upper parts (Forward Assist & Dust Cover not included).

Gen 2 Features:

• New enhanced forging that gives the upper receiver a "billet look"
• Includes Threaded Roll Pin for ease of forward assist installation

Features:

• M4 Feedramps
• .250 takedown pin holes
• Lazer engraved T-marks

Aero Precision 5.56 Black Nitride Bolt Carrier Group

Features:
M16-cut carrier
Machined from 8620 steel
Carrier has forward assist serrations
Black Nitride Finish - advanced lower friction coating that minimizes the need for lubricants and cleaning
Properly staked gas key
5.56 Bolt is machined from Carpenter 158 tool steel
Shot peened
HPT tested/MPI marked
Black o-ring insert on extractor
High quality BCG