M4E1 Threaded 16" 5.56 Mid-Length Complete Upper Receiver w/ ATLAS R-ONE Handguard (Black)

<p>This complete upper includes our new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. 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.</p>

<h4><strong>Includes:</strong></h4>

<ul>

<li>M4E1 Threaded Assembled Upper Receiver</li>

<li>ATLAS R-ONE Handguard of choice</li>

<li>16&quot; 5.56 CMV Barrel</li>

<li>Low Profile Gas Block and Mid-Length Gas Tube</li>

<li>Product comes assembled</li>

<li>This complete upper does not include BCG or Charging Handle. These products may be purchased from EVT, send us a message!</li>

</ul>

<h4><strong>M4E1 Threaded Upper Receiver Features:</strong></h4>

<ul>

<li>New enhanced forging that gives the upper receiver a &quot;billet look&quot;</li>

<li>New picatinny profile that blends seamlessly with our Enhanced Series Handguards</li>

<li>M4 Feedramps</li>

<li>.250 takedown pin holes</li>

<li>Laser engraved T-marks</li>

<li>Includes port door and forward assist installed</li>

</ul>

<h4><strong>ATLAS R-ONE Handguard Features:</strong></h4>

<ul>

<li>Full top picatinny rail for optional attachments</li>

<li>Quick disconnect sling socket at the 3, 6 and 9 o&#39;clock positions</li>

<li>Compatible with low profile gas blocks</li>

<li>1.3&rdquo; Inside diameter</li>

<li>1.5&rdquo; Outside diameter</li>

<li>Compatible with mil-spec AR15 upper receivers and barrels</li>

</ul>

<h4><strong>16&quot; 5.56 Mid-Length Barrel Features:</strong></h4>

<ul>

<li>5.56 NATO 16&quot; Midlength, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled</li>

<li>.750 gas block journal</li>

<li>Mid-length gas system, .0785 gas port</li>

<li>M4 Feed Ramp Extension</li>

<li>HP and MPI tested</li>

<li>Standard A2 flash hider</li>

</ul>