AR-15 UPPER RECEIVERS

AR-15 UPPER RECEIVERS

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Aero Precision M4E1 Complete Upper - 16" Mid-Length - M-LOK - .223 Wylde

Aero Precision M4E1 Complete Upper - 16" Mid-Length - M-LOK - .223 Wylde

This complete upper includes our ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. 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.

INCLUDES:

  • M4E1 Threaded Assembled Upper Receiver
  • 15" M-LOK ATLAS R-ONE Handguard of choice
  • 16" .223 Wylde Stainless Steel QPQ Barrel, Mid-Length
  • Low Profile Gas Block and Mid-Length Gas Tube
  • A2 Flash Hider
  • Product comes assembled
  • This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the FINISH YOUR BUILD tab

M4E1 THREADED UPPER RECEIVER FEATURES:

  • 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

ATLAS S-ONE HANDGUARD FEATURES:

  • Front and rear picatinny rail
  • Eliminated center of top rail for weight reduction
  • Indexing grooves in 12:00 position for positive grip control
  • Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
  • Compatible with low profile gas blocks
  • 1.3" Inside diameter
  • 1.5" Outside diameter
  • Compatible with mil-spec AR15 upper receivers and barrels
  • Learn More about our NEW ATLAS Handguards

16" .223 WYLDE STAINLESS STEEL QPQ BARREL, MID-LENGTH FEATURES:

  • .223 Wylde 16" Mid Length Barrel, 1/8 Twist
  • QPQ Corrosion Resistant Finish
  • .750 gas block journal
  • Mid length gas system
  • M4 Feed Ramp Extension
  • HP and MPI tested
  • Standard A2 flash hider

APAR700305M72

In stock

$519.00

Aero Precision AR15 Gen 2 Complete Upper - 16" Mid-Length - M-LOK - .223 Wylde

Aero Precision AR15 Gen 2 Complete Upper - 16" Mid-Length - M-LOK - .223 Wylde

Aero Precision AR15 Complete Upper featuring the Gen 2 ATLAS S-ONE Enhanced Handguard. Key features include front and rear picatinny rails, eliminated top center of rail for weight reduction, compatible with low profile gas blocks.

Gen 2 Upper Features:

  • .223 Wylde 16" Midlength Barrel
  • .750 gas block journal
  • Mid-length gas system, .0785 gas port
  • M4 Feed Ramp Extension
  • HP and MPI tested
  • Standard A2 flash hider
  • 15" ATLAS S-ONE M-LOK handguard
  • Does not include BCG or Charging Handle

APAR700305M9

Out of stock

Out of stock

AR-15 Upper Receivers

Find the Upper Receiver Parts You Need for your AR-15 Gun

Customize or begin building sooner with our AR-15 Upper Receivers. We have receivers boasting hard chrome-lined chambers and bores that deliver exceptional endurance and easier maintenance. Choose from a fast 1:7 twist or the popular 1:9 rate in our selection of AR-15 upper receivers. Top names in receiver manufacturing are here, including Rock River Arms, CMMG, and ArmaLite. These makers emphasize testing prior to shipment for your satisfaction. CMMG conducts magnetic particle testing on its barrels, a process which reveals tiny flaws. Order a Carbine Upper Receiver with M4 feed ramps and Bird Cage flash suppressor from this manufacturer.

Get the Rifle You Really Want with AR-15 Upper Receiver Parts

Make a match rifle or a versatile hunting firearm with AR-15 upper receiver parts. The AR15’s modular structure allows you to modify its design to meet your aspirations. Find a flat top so you can reconfigure as needed. We carry an M4 version of the AR15 carbine – its flat top provides a range of sighting options. Many of our AR-15 upper receiver parts are made from higher grade, mil-spec steel and work with existing mil-spec lowers. We’re also your superlative source for AR 15 parts sold individually, from charging handle assemblies to sling mounts.

AR-15 Upper Receiver Assembly Ensures Components Coincide

When you want the complete package, we’re here with assemblies! You can opt for an AR-15 Upper Receiver Assembly featuring a 16-inch barrel and a 1:9 twist, paired with a flash suppressor, mount, bolt assembly and charging handle. A dedicated bolt to match the upper assembly is important to the workings of your AR-15. You’ll also benefit from a handle matched to your barrel. Choose AR-15 upper receiver assemblies backed by precision manufacturing to add to your rifle or when building a firearm from square one.