M4E1 Threaded 20" Complete Upper Receiver w/ ATLAS S-ONE Handguard FDE CALIFORNIA LEGAL - .223/5.56

Aero Precision

M4E1 Threaded 20" Complete Upper Receiver w/ ATLAS S-ONE Handguard FDE CALIFORNIA LEGAL - .223/5.56

CA Compliance: N/A
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$629.99
When required by law, the cost to make this product CA legal is included in the price above.

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SKU:
3410
Manufacturer Part #:
APAR700315M48
CA Compliance:
N/A
Caliber:
.223/5.56
Barrel:
20 in
Action:
Semi-Automatic
Color:
Flat Dark Earth
Weight:
61 oz

Shipping to California

  • Status: Complete upper with a barrel. Not a serialized firearm, but we ship it to a licensed dealer only.
  • Delivery: Ships to WBT in La Mesa or to the California gun store you choose; select your dealer at checkout. Not shipped to home addresses.
  • Learn more: Featureless or fixed magazine: which fits your build · FAQ

About this upper

Aero Precision M4E1 Threaded 20" Complete Upper Receiver w/ ATLAS S-ONE Handguard FDE is an upper receiver chambered in .223/5.56 with a 20" barrel. Finish: Flat Dark Earth.

Manufacturer details

This complete upper includes our new 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.

Specifications

  • Brand: Aero Precision
  • Caliber: .223/5.56
  • Action: Semi-Automatic
  • Barrel: 20 in
  • Weight: 61 oz
  • Finish / color: Flat Dark Earth
  • Manufacturer part #: APAR700315M48

Buying from WBT Guns

  • Delivery: Complete uppers ship to a licensed dealer only. Free pickup at our La Mesa store, or select the California gun store you want it sent to at checkout.
  • Payment: Pay in full, put 50% down with the balance due in 14 days, or finance with Credova.
  • Questions: Call (619) 667-9453 or email sales@wbtguns.com. FAQ

WBT Guns is family-owned in La Mesa, California, and has shipped parts and receivers to California buyers since 2012.

A note on accuracy. We work hard to keep every listing correct, but specifications, images and compliance details come from many sources and can contain errors or change without notice. Images may show a configuration that is not California-legal. If a detail on this page matters to your decision, call us and we will confirm it against the actual firearm before you order. The compliance information here is general in nature and is not legal advice; California and local laws change, and the configuration described is confirmed at the time of sale. All sales are subject to applicable federal, state and local law and to the buyer's eligibility to purchase.

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 S-ONE Hanguards 20" 5.56 Rifle Length CMV Barrel Features: 5.56 NATO 20" Rifle Length, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled .750 gas block journal Government Profile Rifle length gas system, .0785 gas port M4 Feed Ramp Extension HP and MPI tested Standard A2 flash hider MORE INFORMATION More Information Shipping to FFL Dealer Required No Made In America Yes Platform AR15 Complete Upper Series ATLAS Caliber 5.56 NATO Barrel Length 20 Weight (oz) 61 oz Other NOTE: Weights above include Gen 2 Upper, Handguard, Barrel, Muzzle Brake and Mounting Hardware.

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