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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.

M4E1 THREADED 18" .223 WYLDE QPQ RIFLE LENGTH COMPLETE UPPER RECEIVER W/ 16.6" M

$575.00Price
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  • INCLUDES:

    • M4E1 Threaded Assembled Upper Receiver
    • 16.6" M-LOK ATLAS R-ONE Handguard of choice
    • 18" .223 Wylde Stainless Steel QPQ Barrel, Rifle Length
    • Low Profile Gas Block and Rifle 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 R-ONE HANDGUARD FEATURES:

    • Full top picatinny rail for optional attachments
    • 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

    18" .223 WYLDE STAINLESS STEEL QPQ BARREL, RIFLE LENGTH FEATURES:

    • .223 Wylde 18" Rifle Length Barrel, 1/8 Twist
    • QPQ Corrosion Resistant Finish
    • .750 gas block journal
    • Rifle length gas system
    • M4 Feed Ramp Extension
    • HP and MPI tested
    • Standard A2 flash hider
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