Aero Precision APAR308556M25 M5E1 308 Win 18 in, FDE, 15 in M-LOK Handgaurd, A2 Flash Hider

Unlike AR15s, the 308 AR variants do not have an industry wide specification. Therefore, home builds are proving problematic for even veteran AR15 assemblers. Avoid the hassle and buy this factory-assembled complete upper-receiver. Just add your choice of Aero Precision complete lower (or build one to suit your taste), and an Aero Precision bolt-carrier group to get to shooting. (Does not include BCG or Charging Handle

Type : Semi-Complete
Caliber : 308 Win
Barrel Length : 18"
Barrel Material : 4150 Chrome Moly Vanadium Steel
Twist : 1:10"
Barrel Finish : Black QPQ
Receiver Finish : Flat Dark Earth Cerakote
Handguards : 15" M-LOK Free-Float
Handguard Finish : Flat Dark Earth Cerakote
Barrel Length Range : 18" to 18.99"