Aero Precision M4E1 Complete Upper Black 5.56 18 Barrel w/ ATLAS S-ONE

Aero Precision Complete Upper Receiver M4E1-T 18in 5.56 Rifle Length Barrel 15in M-LOK ATLAS S-ONE Handguard 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 Threaded 18in 5.56 Complete Upper Receiver with Flash Hider: Manufacturer: Aero Precision Cartridge: 5.56x45mm NATO Barrel Length: 18 in Gas System Length: Rifle Length Barrel Twist Rate: 1-7 Threads per Inch: 1/2x28 Muzzle Device: A2 Flash Hider Gun Model: AR-15 Condition: New Gas Block Journal Size-Diameter: .750 in Handguard Length: 15 in Handguard Style: Hybrid Rail Gun Type: Rifle Gun Make: AR Platform Included Accessories: Standard Gas System Type: Proprietary Magazine Included: No Country of Origin: USA Features of Aero Precision M4E1 Threaded 18in 5.56 Complete Upper Receiver with Flash Hider Enhanced forging that gives the upper receiver a "billet look". Picatinny profile that blends seamlessly with our Enhanced Series Handguards. .250 takedown pin holes. Laser engraved T-marks. Includes port door and forward assist installed. Full top picatinny rail for optional attachments. Quick disconnect sling socket at the 3 6 and 9 o'clock positions. Compatible with low profile gas blocks. Compatible with mil-spec AR15 upper receivers and barrels. Package Contents: Aero Precision M4E1 Threaded 18in 5.56 Complete Upper Receiver with Flash Hider Aero Precision APAR700305M8: M4E1-T Complete Upper 18in 5.56 Rifle Length Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized Black