Aero Precision M4E1 Enhanced Stripped Upper Receiver OD Green

Aero Precision M4E1 Enhanced Stripped Upper Receiver OD Green. 56 NATO - The M4E1 upper receiver is a one-piece design combining the handguard mounting platform with the upper itself. It is machined from 7075-T6 aluminum with M4 feedramps .250 takedown pin holes and supports barrels with a diameter up to 1". Included is a barrel nut and wrench port door and forward assist. This model has a black hardcoat anodized finish. NOTE: This upper is not piston-kit compatible. Specifications for Aero Precision APAR600201AC M4E1 Enhanced Upper Receiver 223 Remington/5.56 NATO: Mfg Item Num: APAR600201AC Supplier SKU: 100541 Category: UPPERS Receiver Finish: Black Hard Coat Anodized Type: Complete Gas Impingement Caliber: 223 Remington/5.56 NATO Sights: None Optic Ready Receiver Description: 7075-T6 Aluminum Package Contents: Aero Precision M4E1 5.56 NATO Enhanced Upper Receiver The Aero Precision APAR600201AC M4E1 Enhanced Upper Receiver 223 Remington/5.56 NATO is a quality addition to the Aero Precision lineup. For more great deals on AR15 Upper Receivers by Aero Precision please browse our Aero Precision Gun Parts page. Our state of the art M4E1 platform starts here with the M4E1 Upper Receiver. The M4E1 upper receiver is a one-piece design combining the handguard mounting platform with the upper itself. Through superior engineering we have condensed the parts needed to mount a free-floated handguard to a mere 8 screws. Since the handguard mounting surface and upper are of the same forging not only is it a stronger system but we are able to make additional lightening cuts to save weight and allow for more efficient cooling. Ease of installation - Simply insert your barrel assembly into the M4E1 upper tighten it using the provided barrel nut and wrench slide your rail on and tighten the rail screws. Within minutes you have a modular free-floated rail.