Aero Precision M4E1 16in 5.56mm Complete Upper Receiver with Flash Hider

The Aero Precision M4E1 16″ Complete Upper Receiver is a one-piece design combining the handguard mounting platform with the upper itself. This is a streamlined design that only needs eight screws to mount a free-floating handguard, making these AR15 Upper Receivers a more robust, durable system that you can count on. This complete upper receiver even comes with an A2 flash hider and Picatinny rails, so you are immediately ready to mount optics and take it to the range after installing it on a lower receiver. Pick one up today to complete your carbine build! Specifications for Aero Precision M4E1 16in 5.56mm Complete Upper Receiver with Flash Hider: Manufacturer: Aero Precision Cartridge: 5.56x45mm NATO Overall Length: 26 in Barrel Length: 16 in Threads per Inch: 1/2×28 Muzzle Device: A2 Flash Hider Gun Model: AR-15 Condition: New Gun Make: AR Platform Included Accessories: None Weight: 48.5 oz Magazine Included: No Features of Aero Precision M4E1 16in 5.56mm Complete Upper Receiver with Flash Hider: Laser engraved T-marks Comes assembled, with port door and forward assist installed Handguard mounting platform is forged into the receiver Works with Aero Precision handguards but also fits most BAR-system handguards Built in anti-rotation tabs Scalloped rails Continuous top rail 1.78″ inside diameter fits most muzzle devices and 1.5″ suppressors Compatible with low profile gas blocks .0785 Gas Port M4 Feed Ramp Extension HP and MPI tested Package Contents: Aero Precision M4E1 16in 5.56mm Complete Upper Receiver with Flash Hider Gen 2 Enhanced Handguard Barrel Nut Wrench