Aero Precision M4E1 AR-15 5.56x45mm NATO 16in Picatinny Upper Receiver Mid Length Barrel 1-7 Twist 1/2x28 A2 Flash Hider 15in Quad Rail Handguard No

Aero Precision M4E1 AR-15 5.56x45mm NATO 16in Picatinny Upper Receiver Mid Length Barrel 1-7 Twist 1/2x28 A2 Flash Hider 15in Quad Rail Handguard No. 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 16in Picatinny Upper Receiver: Manufacturer: Aero Precision Caliber: 5.56x45mm NATO Overall Length: 26 in Barrel Length: 16 in Barrel Profile: Government Gas System Length: Mid 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: M16 AR-15 Fabric/Material: 7075-T6 forged aluminum 4150 Chrome Moly Vanadium Attachment Type: Picatinny Handguard Length: 15 in Handguard Style: Quad Rail Gun Rail: Picatinny Gun Type: Rifle Gun Make: Aero Precision AR Platform Barrel Material: 4150 Chrome Moly Vanadium Gas Block Journal Size-Length: 0.75 in Weight: 48.5 oz Bolt Carrier Group Included: No Charging Handle Included: No Magazine Included: No Condition: New Mount Type: Picatinny Threads per Inch: 1/2x28 Country of Origin: USA Features of Aero Precision M4E1 AR-15 5.56x45mm NATO 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 (Anodized only) 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-Length Barrel Features: 5.56 Nato 16" Midlength 1/7 twist 4150 CrMoV QPQ gas port drilled .750 gas block journal Midlength 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 16in Picatinny Upper Receiver M4E1 Enhanced Assembled Upper Receiver Enhanced Handguard of choice 16" 5.56 Mid-Length CMV Barrel Low Profile Gas Block and Mid Length Gas Tube Product comes assembled What firearm models does the manufacturer say Aero Precision M4E1 AR-15 5.56x45mm NATO 16in Picatinny Upper Receiver is compatible with? The manufacturer suggests that Aero Precision M4E1 AR-15 5.56x45mm NATO 16in Picatinny Upper Receiver is compatible with AR-15 M16Aero Precision APAR640251Q7: M4E1 Mid Barrel Complete Upper Receiver w/Flash Hider AR-15 5.56x45mm NATO 16in Mid Length Barrel 15in Quad Rail Handguard No BCG/CH Anodized Black