Aero Precision M4E1 .300 BLK Complete Uppers are equipped with CMV medium profile barrels. Along with excellent fit and finish, these AR15 Upper Receivers from Aero Precision come with Gen 2 Enhanced free-float handguards with Picatinny top rail and your choice of rail types on the other 3 faces. These solid Aero Precision M4E1 Complete Uppers are compatible with standard AR15/M4 components and have been MPI and HP tested. Get more power and accuracy when you upgrade to one of these Aero Precision M4E1 .300 Blackout Complete Upper Assemblies. Specifications for Aero Precision M4E1 16in .300 Blackout Barrel Complete Upper Receiver with Flash Hider: Manufacturer: Aero Precision Cartridge: .300 AAC Blackout Overall Length: 26 in Barrel Length: 16 in Barrel Profile: DRP Gas System Length: Pistol Length Barrel Twist Rate: 1-7 Muzzle Device: A2 Flash Hider Gun Model: AR-15 Condition: New Handguard Length: 12 in Gun Make: AR Platform Barrel Material: 4150 Chrome Moly Vanadium Bolt Carrier Group Included: No Charging Handle Included: No Weight: 48.5 oz Magazine Included: No Features of Aero Precision M4E1 16in .300 Blackout Barrel Complete Upper Receiver with Flash Hider: Forged from 7075 T6 aluminum. Precision machined to M4E1 specs. M4 feedramp extension. Comes assembled, with port door and forward assist installed. .300 Blackout for more power – compatible with standard AR15/M16 components. Handguard mounting platform is forged into the receiver. Works with Aero Precision handguards but also fits most BAR-system handguards. Gen 2 Enhanced Handguard features 1-piece free float design, built in anti-rotation tabs, scalloped rails, continuous top rail, 1.78-inch inside diameter fits most muzzle devices and 1.5-inch suppressors, compatible with low profile gas blocks, QD sling socket at the 3, 6 and 9 o’clock positions, additional milling along flats to aid with gripping and add visual appeal, new profile for continuous Picatinny top rail. 16-inch barrel made of 4150 Chrome Moly Vanadium with QPQ corrosion resistant finish. Low Profile Gas Block and Pistol Length Gas Tube. HP and MPI Tested. Standard A2 Flash Hider. Barrel nut and wrench are included. Does not include BCG or charging handle. Package Contents: Aero Precision M4E1 16in .300 Blackout Barrel Complete Upper Receiver with Flash Hider Barrel Nut Wrench
6 reviews for Aero Precision M4E1 16in .300 Blackout Barrel Complete Upper Receiver with Flash Hider
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BRH –
Very nice fit & finish. Would recommend over many other uppers. The finish seems very thick on the metal & the attention to detail is extremely nice to see. My model is a 16 inch barrel with a 15 inch m lock style cover.
Mike –
I put together a 300 black out all Aero parts night force scope with suppressor. I am very impressed with the quality. I have put 60 rounds threw the gun performed very well every thing fit together perfectly I would definitely recommended Aero products
Pepe –
Very good upper in FDE, no scratches or blemishes and very easy to clean with minor effort. I am not crazy about the quad rail but like that it doesn't run all the way back, making it more comfortable to hold with my support hand. I have a MI mlok slim handguard gen2 on my 556 upper and prefer that better over the quad rail, thats why I gave this 4 stars.
howl –
Really love this aero precision 300 blackout upper, very sleek and lightweight, perfect way to upgrade and modernize an AR15. Fits my Rock River Arms 223/556 lower perfectly looks like a new rifle. Love the rail upper picatinny and 3/4 MLOK.
John –
This is the perfect barrel for my PDW build. being a complete upper receiver/barrel combo makes this a whole lot easier, quicker and with AeroPrecisions high quality. Along with being very affordable you can’t bet Opticsplanet value and ease of service for your build.
Chris –
I have put 1500 rounds thru this upper with out a single hiccup . Ole girl paired with Aero lower and she runs with a h buffer and jp spring . She never gets tired of spitting so I try to keep her full and cool .