Aero Precision AR-15 M4E1-E Upper Assembly 5.56x45mm NATO 13.9" Barrel 12.7" ATLAS R-ONE Handguard Black

Aero Precision Complete Upper Receiver M4E1-T RM12.7 5.56x45mm NATO 13.9in Government Mid Length 1 in 7 1/2 x 28 12.7in A2 Flash Hider Anodized Black. 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 13.9in 5.56x45mm NATO RM12.7 Complete Upper Receiver: Manufacturer: Aero Precision Cartridge: 5.56x45mm NATO Barrel Length: 13.9 in Barrel Profile: Government Gas System Length: Mid Length Barrel Twist Rate: 1-7 Threads per Inch: 1/2x28 Handguard Type: A2 Muzzle Device: A2 Flash Hider Gas Block Journal Size-Diameter: .750 in Handguard Length: 12.7 in Gun Type: Rifle 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 13.9in 5.56x45mm NATO RM12.7 Complete Upper Receiver M4E1 Threaded 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 Atlas R-One Handguard: Full top picatinny rail Quick disconnect sling socket at the 3 6 and 9 o'clock positions Compatible with low profile gas blocks 1.3in Inside diameter 1.5in Outside diameter Compatible with mil-spec AR15 upper receivers and barrels 13.9in 5.56 M4 CMV Barrel Mid-Length: 5.56 Nato 13.9in Barrel 1/7 twist 4150 CrMoV QPQ gas port drilled .750 gas block journal Mid-Length Gas System M4 Feed Ramp Extension HP and MPI tested Standard A2 flash hider Package Contents: Aero Precision M4E1-T 13.9in 5.56x45mm NATO RM12.7 Complete Upper Receiver M4E1 Threaded Assembled Upper Receiver 12.7in ATLAS R-ONE Handguard Of Choice 13.9in 5.56 Mid-Length CMV Barrel Low Profile Gas Block and Mid-Length Gas Tube Product Comes Assembled Aero Precision APAR700704M99: Complete Upper Receiver M4E1-T RM12.7 5.56x45mm NATO 13.9in Government Mid Length 1 in 7 1/2 x 28 12.7in A2 Flash Hider Anodized Black