Aero Precision M5E1 .308 Enhanced Upper ReceiverAnodized Black

Aero Precision M5E1 .308 Enhanced Upper ReceiverAnodized Black. The M5E1 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 M5E1 upper tighten it using the included barrel nut and slide your rail on and tighten the rail screws. Within minutes you have a modular free-floated rail. Specifications for Aero Precision M5E1 .308 Enhanced Upper Receiver: Manufacturer: Aero Precision Fabric/Material: 7075-T6 Aluminum Caliber: .308 Winchester Gun Make: AR Platform Gun Model: AR-15 Condition: New Country of Origin: USA Features of Aero Precision M5E1 .308 Enhanced Upper Receiver M4 Feedramps .2795 takedown pin holes Comes assembled with dust cover and forward assist installed M5E1 Specific Details: Handguard mounting platform is forged into the receiver Works with Aero Precision M5 Enhanced Handguards Barrel nut included Torque to 65 ft. lbs. with an armorer's wrench (we recommend a TAPCO Armorer's Wrench) Package Contents: Aero Precision M5E1 .308 Enhanced Upper Receiver Port Door and Forward Assist installed Barrel Nut What firearm models does the manufacturer say Aero Precision M5E1 .308 Enhanced Upper Receiver is compatible with? The manufacturer suggests that Aero Precision M5E1 .308 Enhanced Upper Receiver is compatible with AR-15 M5E1Aero Precision APAR308504AC: M5E1 .308 Enhanced Upper ReceiverAnodizedBlack