Aero Precision M4E1 Enhanced Complete Upper Receiver 5.56 NATO 14.5 in Barrel Government Profile 1-7 Twist 12 in M-LOK Handguard Pinned VG6 Epsilon

Aero Precision M4E1 Enhanced Complete Upper Receiver 5.56 NATO 14.5 in Barrel Government Profile 1-7 Twist 12 in M-LOK Handguard Pinned VG6 Epsilon. 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. We've taken the pain out of building a legal 14.5in rifle build. These pinned and welded 14.5in complete uppers feature an Epsilon 556SL that is permanently affixed to the muzzle providing an overall legal length of 16in. Worried you might want to change your gas block? No worries The outer diameter of the Epsilon 556SL allows you to easily slide your gas block over the muzzle device making it easy to change or service your gas system. If you've had a 14.5in build planned but didn't want to deal with the hassle of getting it pinned and welded or being stuck with a specific configuration then our 14.5 pinned and welded barrels/uppers are for you Specifications for Aero Precision M4E1 14.5in 5.56 NATO Enhanced Complete Upper Receiver: Manufacturer: Aero Precision Caliber: 5.56x45mm NATO Overall Length: 16 in Barrel Length: 14.5 in Barrel Profile: Government Gas System Length: Mid Length Barrel Twist Rate: 1-7 Muzzle Device: Pinned VG6 Epsilon 556SL Finish: Anodized Color: Black Fabric/Material: 4150 Chrome Moly Vanadium 7075-T6 Aluminum Handguard Length: 12 in Gun Rail: Picatinny Gun Type: Rifle Gun Model: M4 Included Accessories: VG6 Epsilon 556SL Gen 2 Enhanced M-LOK Handguard Condition: New Magazine Included: No Country of Origin: USA Features of Aero Precision M4E1 14.5in 5.56 NATO Enhanced Complete Upper Receiver 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 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 Package Contents: Aero Precision M4E1 14.5in 5.56 NATO Enhanced Complete Upper Receiver M4E1 Enhanced Assembled Upper Receiver 12in Gen 2 Enhanced M-LOK Handguard 14.5in 5.56 CMV Barrel Pinned Low Profile Gas Block and Gas Tube VG6 Epsilon 556SL Aero Precision APAR640232M68: M4E1 Enhanced Complete Upper Receiver 5.56 NATO 14.5 inch Barrel Government Profile Mid-Length 1-7 Twist 12 inch M-LOK Handguard Pinned VG6 Epsilon 556SL Brake Anodized Black