Aero Precision M4E1-T Complete Upper Receiver 5.56mm 12.5in Carbine Length R-One M-LOK Handguard FDE

Aero Precision M4E1-T Complete Upper Receiver 5.56mm 12.5in Carbine Length R-One M-LOK Handguard FDE. Specifications for Aero Precision M4E1-T 12.5in 5.56mm Complete Upper Receiver: Manufacturer: Aero Precision Caliber: 5.56x45mm NATO Barrel Length: 12.5 in Gas System Length: Carbine Length Barrel Twist Rate: 1-7 Muzzle Device: A2 Flash Hider Gun Model: AR-15 Condition: New Gas Block Journal Size-Diameter: .750 in Handguard Length: 10.3 in Barrel Material: 4150 Chrome Moly Vanadium Bolt Carrier Group Included: No Charging Handle Included: No Magazine Included: No Mount Type: M-LOK Country of Origin: USA Aero Precision M4E1-T 12.5in 5.56mm Complete Upper Receiver M4E1 UPPER FEATURES: Forged from 7075 T6 aluminum Precision machined to M4E1 specs M4 feedramps Laser engraved T-marks Comes assembled with port door and forward assist installed Accepts standard AR15/M16 components Handguard mounting platform is forged into the receiver Works with Aero Precision handguards but also fits most BAR-system handguards Barrel nut and wrench are included S-ONE HANDGUARD FEATURES: Interrupted picatinny rail for optional attachments Full length MLOK attachment points at the 3 6 and 9 o'clock positions Compatible with low profile gas blocks 1.3" Inside diameter 1.5" Outside diameter Compatible with mil-spec AR15 upper receivers and barrels 12.5" 5.56 PISTOL LENGTH BARREL FEATURES: Chamber: 5.56 Length: 12.5" Twist: 1 in 7 Threading: 1/2"x28 Finish: QPQ corrosion resistant finish both inside and out Gas System Length: Pistol M4 Barrel Extension HP and MPI Tested Package Contents: Aero Precision M4E1-T 12.5in 5.56mm Complete Upper Receiver M4E1 Enhanced Assembled Upper Receiver 12.5" 5.56 Pistol Length Gov Barrel Low Profile Gas Block and Pistol Length Gas Tube 10.3" S-ONE Handguard Product comes assembled What firearm models does the manufacturer say Aero Precision M4E1-T 12.5in 5.56mm Complete Upper Receiver is compatible with? The manufacturer suggests that Aero Precision M4E1-T 12.5in 5.56mm Complete Upper Receiver is compatible with AR-15Aero Precision APAR712713M30: M4E1-T Complete Upper Receiver 5.56mm 12.5in Carbine Length R-One M-LOK Handguard FDE