Memorial Day Savings: Take 15% Off $250+ Orders w/ Code: MD15

Memorial Day Savings: Take 15% Off $250+ Orders w/ Code: MD15

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AERO PRECISION M4E1 350 LEGEND ASSEMBLED UPPER RECEIVER W/ATLAS R-ONE

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Made In The U.S.A.

Products marked with the Stars and Stripes are proudly made in the U.S.A.

Many customers have asked us to show which products are made in America, and we’ve begun working with our vendors to identify them. This information, however, is not available for all items nor does it imply that foreign merchandise is of lesser quality. We will continue to gather this information to assist our customers in making informed buying decisions, and will keep our website current with the latest information.

Guaranteed. Forever.®

We make purchasing and returning products as simple as possible. If you buy a product from Brownells and decide you don’t need it, don’t want it, or just don’t like it, we’ll take it back any time… with a few exceptions

Exceptions include: 

  • Firearms
  • Ammunition
  • Modified 80% frames & receivers 
  • Gun powder
  • Primers
  • Liquids
  • Limited Quantity/Hazardous items
  • Products that are subject to pending or implemented restrictions due to Federal, State, or Local regulation/legislation

All other products are Guaranteed. Forever.® you can easily identify these products by the Guaranteed. Forever.® Icon.

Guaranteed. Forever.

Guaranteed. Forever.® return policy applies to the product’s original owner along with proof of purchase. Any items returned within 45 days of shipment are entitled to a refund. Any items returned after 45 days of shipment will be issued store credit in the form of a Brownells Gift Card. If a Brownells/Sinclair product was purchased through another retailer as a new product we will require proof of purchase to replace or refund.  (Refund will be issued as store credit in the form of a Brownells gift card.)  

350 Legend offers great performance for hunting medium game with the AR15 platform. Being a straight walled cartridge, 350 legend allows for legal hunting in some states or jurisdictions with regulations that prohibit the use of bottleneck cartridges that are commonly used for hunting in the AR15/AR10 platforms.

NOTE:
Ensure you comply with all rules and regulations for your specific hunting area.

This assembled upper includes Aero's 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. Aero's 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" - 16.6” ATLAS R-ONE Handguard
  • 16" or 20” .350 Legend DMR CMV Carbine Length Barrel
  • Low Profile Gas Block and Carbine Length Gas Tube
  • Product comes assembled
  • This assembled 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 Aero's 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
  • 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


16" .350 LEGEND DMR CMV CARBINE LENGTH BARREL FEATURES:
  • .350 Legend 16" Carbine Length, 1/16 twist, 4150 CrMoV, QPQ, gas port drilled
  • .750 gas block journal
  • DMR Profile
  • Carbine length gas system, .0785 gas port
  • M4 Feed Ramp Extension
  • HP and MPI tested

20" .350 LEGEND DMR CMV CARBINE LENGTH BARREL FEATURES:
  • .350 Legend 20" Carbine Length, 1/16 twist, 4150 CrMoV, QPQ, gas port drilled
  • .750 gas block journal
  • DMR Profile
  • Carbine length gas system, .0785 gas port
  • M4 Feed Ramp Extension
  • HP and MPI tested
  • Standard 9mm A2 flash hider
Specifications

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Restriction

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