This complete upper includes our ATLAS S-ONE Handguard! Our proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards. 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 Threaded Complete Upper Receiver: Manufacturer: Aero Precision Cartridge: 5.56x45mm NATO Overall Length: 16 in Barrel Length: 14.5 in Barrel Twist Rate: 1-7 Threads per Inch: 1/2×28 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 Included Accessories: VG6 Epsilon 556SL Condition: New Magazine Included: No Features of Aero Precision M4E1 14.5in 5.56 NATO Threaded Complete Upper Receiver New enhanced forging that gives the upper receiver a “billet look” New picatinny profile that blends seamlessly with our Enhanced Series Handguards M4 Feedramps .250 takedown pin holes Laser engraved T-marks Includes port door and forward assist installed Quick disconnect sling socket at the 3, 6 and 9 o’clock positions Compatible with low profile gas blocks Package Contents: Aero Precision M4E1 14.5in 5.56 NATO Threaded Complete Upper Receiver M4E1 Threaded Assembled Upper Receiver 12in ATLAS S-ONE Handguard 14.5in 5.56 CMV Barrel Pinned Low Profile Gas Block and Gas Tube VG6 Epsilon 556SL
5 reviews for Aero Precision M4E1 14.5in 5.56 NATO Threaded Complete Upper Receiver
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DKB –
Everything is tight and well made. Small handrail provides very comfortable grip, and removing the flat top on most of the rail cuts a good amount of weight. I put this on a lightweight build, and have not been disappointed.
E man –
Absolutely love it. Great quality, the best upper you can get in the price range. Perfect when you want a 14.5" barrel and don't want to SBR it.
O –
Always recommend Awro parts and best prices from optics planet!
captainfish –
This upper is great shoots really nice and feels good. Quality is excellent!! Fit and finish top notch had no problems and was a nice tight fit on a Spikes stripped lower, couldn't have asked for better fit.
Just a normal guy with a gun –
My second 14.5 aero upper, can’t go wrong. Aero thought ahead by using a slim muzzle break so you can swap out different gas blocks and hand gaurds. If you don’t want a tax stamp, 14.5 is the way to go. With pin and welded upper you get a shorter profile while maintaining compliance. I put around 500 rounds through this upper and so far it’s holding up well. No issues. I would hold off til you get this upper on sale since aero does have manufacture sales or optic planets many coupon discounts.