Aero Precision M4E1 AR-15 5.56x45mm NATO 10.5 in Picatinny Upper Receiver Rifle Length Barrel 1-7 Twist 1/2x28 A2 Flash Hider 9 in Quad Rail Handguard

Aero Precision M4E1 AR-15 5.56x45mm NATO 10.5 in Picatinny Upper Receiver Rifle Length Barrel 1-7 Twist 1/2x28 A2 Flash Hider 9 in Quad Rail Handguard. 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 5.56x45mm NATO 10.5 in Picatinny Upper Receiver: Manufacturer: Aero Precision Caliber: 5.56x45mm NATO Barrel Length: 10.5 in Barrel Profile: Government Gas System Length: Rifle Length Barrel Twist Rate: 1-7 Firearms Threads Per Inch: 1/2x28 Handguard Type: Free-Float Muzzle Device: A2 Flash Hider Finish: Anodized Color: Black Gun Model: AR-15 M16 Fabric/Material: 7075 T6 Aluminum Attachment Type: Picatinny Handguard Length: 9 in Handguard Style: Quad Rail Gun Rail: Picatinny Quad Rail Gun Type: Rifle Gun Make: AR Platform Aero Precision Barrel Material: 4150 Chrome Moly Vanadium Gas Block Journal Size-Length: 0.75 in Bolt Carrier Group Included: No Charging Handle Included: No Magazine Included: No Condition: New Country of Origin: USA Features of Aero Precision M4E1 AR-15 5.56x45mm NATO 10.5 in 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 wrench 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 10.5" 5.56 Barrel Features: 5.56 Nato 10.5" Barrel 1/7 twist 4150 CrMoV QPQ gas port drilled .750 gas block journal Carbine 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 5.56x45mm NATO 10.5 in Picatinny Upper Receiver M4E1 Enhanced Assembled Upper Receiver Enhanced Handguard of choice 10.5" 5.56 CMV Barrel Low Profile Gas Block and Carbine Length Gas Tube Product comes assembled What firearm models does the manufacturer say Aero Precision M4E1 AR-15 5.56x45mm NATO 10.5 in Picatinny Upper Receiver is compatible with? The manufacturer says that Aero Precision M4E1 AR-15 5.56x45mm NATO 10.5 in Picatinny Upper Receiver is compatible with AR-15 M16Aero Precision APAR640221Q2: M4E1 Complete Upper Receiver AR-15 10.5 in Rifle Length Barrel 9 in Quad Rail Handguard No BCH/CH Anodized Black