Aero Precision Complete Upper Receiver M4E1-T 5.56x45mm NATO 18in Government Rifle Length 1 in 7 1/2 x 28 15in A2 Flash Hider Cerakote FDE. 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. Our 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. Specifications for Aero Precision M4E1-T 16in 5.56x45mm NATO RM15 Complete Upper Receiver: Manufacturer: Aero Precision Caliber: 5.56x45mm NATO Barrel Profile: Government Barrel Twist Rate: 1-7 Threads per Inch: 1/2×28 Handguard Type: A2 Muzzle Device: A2 Flash Hider Gun Model: AR-15 Handguard Length: 15 in Gun Type: Rifle Gun Make: AR Platform Barrel Material: 4150 CMV Steel Bolt Carrier Group Included: No Charging Handle Included: No Magazine Included: No Country of Origin: USA Features of Aero Precision M4E1-T 16in 5.56x45mm NATO RM15 Complete Upper Receiver New enhanced forging that gives the upper receiver a billet look New picatinny profile that blends seamlessly with our Enhanced Series Handguards M4 Feedramps .250 takedown pin holes Laser engraved T-marks Includes port door and forward assist installed Package Contents: Aero Precision M4E1-T 16in 5.56x45mm NATO RM15 Complete Upper Receiver M4E1 Threaded Assembled Upper Receiver ATLAS R-ONE Handguard Of Choice 18in 5.56 Rifle Length CMV Barrel Low Profile Gas Block Rifle Length Gas Tube What firearm models does the manufacturer say Aero Precision M4E1-T 16in 5.56x45mm NATO RM15 Complete Upper Receiver is compatible with? The manufacturer suggests that Aero Precision M4E1-T 16in 5.56x45mm NATO RM15 Complete Upper Receiver is compatible with AR-15Aero Precision APAR700715M8: Complete Upper Receiver M4E1-T 5.56x45mm NATO 18in Government Rifle Length 1 in 7 1/2 x 28 15in A2 Flash Hider Cerakote FDE
CMMG DISSENT 5.7x28mm 6.5in Upper Receiver 1-9 Twist 1/2 X 28 TPI Armor Black Original price was: $1,399.95.$1,179.00Current price is: $1,179.00. 
Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Moly Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard A2 Flash Hider Original price was: $579.00.$469.99Current price is: $469.99. Aero Precision Complete Upper Receiver M4E1-T 5.56x45mm NATO 18in Government Rifle Length 1 in 7 1/2 x 28 15in A2 Flash Hider Cerakote FDE
Original price was: $599.00.$539.99Current price is: $539.99.
