AERO PRECISION M5E1 Complete Upper 18" .308 Rifle Barrel EM15 Ano

Ballistic Advantage Premium Barrel .308 Win 18", Black - Premium Quality and Consistent Accuracy - BABL308021PQ

AERO PRECISION M4E1 Threaded Complete Upper 16" 5.56 Barrel w/ 15" M-LOK ATLAS R-ONE Handguard - BLK

AERO PRECISION M5 .308 Stripped Upper Receiver - Anodized Black

AERO PRECISION M5 308 Win Assembled Upper Receiver | OD Green

AERO PRECISION M5 308 Assembled Upper Receiver | Kodiak Brown Anodized

Ballistic Advantage Performance Barrel 5.56x45mm 13.70", Black - Compact and Efficient Barrel - BABL556036F

PROOF RESEARCH Sendero Bolt Action Barrel .308 Cal 16.50"