Aero Precision 16" 5.56 NATO Complete Black Upper Receiver

• This complete AR 15 upper comes preassembled and includes the following items:
• M4E1 Enhanced Upper Receiver - Completed and assembled
• Enhanced 15" M-LOK Handguard
• 16" M4 Barrel - Mid-Length, CMV, 5.56NATO
• Low Profile Gas Block and Carbine Length Gas Tube
• This does not come with a Bolt Carrier Group or Charging Handle since those are usually an easy upgrade and helps keep our price down

M4E1 Enhanced Upper Receiver Features:

• Forged Stripped Upper from 7075 T6 Aluminum
• Machined to Aero Precisions' tight M4E1 specifications
• M4 Feedramps
• Black hard coat anodized Mil-Spec 8625 Type 3 Class 2
• Laser engraved T-Marks - Markings on top of upper receiver Picatinny rail to indicate positions where items are attached
• Already has the Port Ejection Cover and Tap Forward Assist installed
• Handguard mounting platform forged directly into the receiver for stability and solidarity
• Barrel nut and wrench come included

Enhanced 15" M-LOK Handguard Features:

• Constructed of a 1-piece free float Handguard design
• Built-In anti-rotation tabs
• Machined scalloped rails for gripping and positive control
• Continuous top picatinny rail
• QD, Quick Disconnect, sling socket at the 3, 6 & 9 O'Clock positions so you can attach your sling wherever's comfortable
• Additional milling along flat areas to give ridges, aiding in gripping and more positive control of your upper
• Compatible with M-LOK accessories on the sides and the bottom
• Finished in Black

16" M4 5.56 NATO Mid-Length Barrel Features:

• Made from 4150 Chrome Molly Vanadium Steel
• QPQ finished to maintain accuracy
• 1/7 Twist Rate
• .750 low profile gas block installed with mid-length gas tube
• M4 feed ramp extension
• HP and MPI tested
• Standard A2 flash hider preinstalled
• Compatible with 5.56 NATO and .223 Remington rounds