Aero Precision M4E1 5.56mm 16in Picatinny Upper Receiver M4 Carbine Length Barrel 1-7 Twist 15in Quad Rail Handguard Gen 2 Anodized Black

Aero Precision M4E1 5.56mm 16in Picatinny Upper Receiver M4 Carbine Length Barrel 1-7 Twist 15in Quad Rail Handguard Gen 2 Anodized Black. Key features include the addition of quick disconnect sling sockets enhanced milling design for grip and visual appeal and a new profile for the picatinny top rail. Specifications for Aero Precision M4E1 AR-15 5.56mm 16in Picatinny Upper Receiver: Manufacturer: Aero Precision Caliber: 5.56x45mm NATO Overall Length: 26 in Barrel Length: 16 in Barrel Twist Rate: 1-7 Firearms Threads Per Inch: 1/2x28 Handguard Type: Free-Float Muzzle Device: A2 Flash Hider Gun Model: AR-15 Fabric/Material: 7075-T6 Aluminum 4150 CrMoV Gas Block Journal Size-Diameter: .750 in Handguard Style: Quad Rail Gun Rail: Picatinny Gun Type: Carbine Gun Make: AR Platform Barrel Material: 4150 Chrome Moly Vanadium Weight: 48.5 oz Bolt Carrier Group Included: No Charging Handle Included: No Magazine Included: No Condition: New Threads per Inch: 1/2x28 Country of Origin: USA Features of Aero Precision M4E1 AR-15 5.56mm 16in Picatinny Upper Receiver: M4E1 Upper Features: Forged from 7075 T6 aluminum Precision machined to M4E1 specs M4 feedramps Matte black hard coat anodized Mil 8625 Type 3 Class 2 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 Gen 2 Enhanced Handguard Features: 1pc free float design 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 Gen 2 Feature - Quick disconnect sling socket at the 3 6 and 9 o'clock positions Gen 2 Feature - Additional milling along flats to aid with gripping and add visual appeal Gen 2 Feature - New profile for the continuous picatinny top rail 16" 5.56 Mid Pencil Barrel Features: 5.56 Nato 16" Barrel 1/7 twist 4150 CrMoV QPQ gas port drilled .625 gas block journal Mid-length gas system .0785 gas port M4 Feed Ramp Extension HP and MPI tested Standard A2 flash hider Package Contents: Aero Precision M4E1 AR-15 5.56mm 16in Picatinny Upper Receiver M4E1 Enhanced Assembled Upper Receiver Enhanced Handguard of choice 16" 5.56 CMV Barrel Low Profile Gas Block and Mid Pencil Length Gas Tube Product comes assembled What firearm models does the manufacturer say Aero Precision M4E1 AR-15 5.56mm 16in Picatinny Upper Receiver is compatible with? The manufacturer says that Aero Precision M4E1 AR-15 5.56mm 16in Picatinny Upper Receiver is compatible with AR-15Aero Precision APAR640251Q6: M4E1 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EQ-15 HG Gen 2 Anodized Black