Aero Precision M4E1 PRO Stripped AR-15 Lower Receiver - Kodiak Brown Anodized - BLEM

AERO PRECISION M4E1 Multi Caliber Complete AR15 Lower Receiver w/ A2 Grip & M4 Stock - FDE

AERO PRECISION M4E1 Rifle Cmplt Lower Rcv A2 Grip No Stock Black

AERO PRECISION M4E1 Stripped Lower Receiver ODG

Wraithworks Billet Slick Side AR-15 Upper Receiver - Black | No Forward Assist or Brass Deflector

ONE HORSE AR15 A3 Stripped Upper Receiver Anodized

AERO PRECISION M4E1-T 5.56 NATO 11.5" Complete Upper Receiver | Black

White Label Armory WLA-LOW-1015-01 Lower Parts Kit For AR-15 Black