F Aero Precision M4E1 Enhanced 8" 5.56 Complete Upper Receiver with 7.3" Enhanced M-LOK Handguard - Cerakote FDE - APAR640270M102 $544.99 APAR640270M102 show more like this Calculated in Cart Classic Firearms F Aero Precision Complete Upper, M4E1-E, 5.56, 8in, Pistol Barrel, EM7.3 Cerakote, FDE, APAR640270M102 $544.99 APAR640270M102 show more like this Free Shipping on most orders over $49 Optics Planet