Aero Precision M4E1 Threaded Complete Upper 5.56 18" Anodized Black

This complete upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards. Includes: M4E1 Threaded Assembled Upper Receiver - Anodized Black 15" ATLAS R-ONE M-LOK Handguard with 16" 5.56 CMV Barrel OR 15" ATLAS R-ONE M-LOK Handguard 18" 5.56 Rifle Length CMV Mfg: Aero Precision