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Outerwild AR15 5.56NATO Complete Premium Upper Receiver 4027-3410-026-O Caliber: 5.56x45mm NATO, Overall Length: 22.9 in, $10.00 Off w/ Free S&H

Outerwild AR15 Complete Premium Upper Receiver, 5.56NATO, 14.5in, 1-7 Twist, 13in M-LOK Handguard, Black Anodize, 4027-3410-026-O
Outerwild AR15 Complete Premium Upper Receiver, 5.56NATO, 14.5in, 1-7 Twist, 13in M-LOK Handguard, Black Anodize, 4027-3410-026-O
Outerwild AR15 Complete Premium Upper Receiver, 5.56NATO, 14.5in, 1-7 Twist, 13in M-LOK Handguard, Black Anodize, 4027-3410-026-O
Outerwild AR15 Complete Premium Upper Receiver, 5.56NATO, 14.5in, 1-7 Twist, 13in M-LOK Handguard, Black Anodize, 4027-3410-026-O
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Outerwild AR15 Complete Premium Upper Receiver, 5.56NATO, 14.5in, 1-7 Twist, 13in M-LOK Handguard, Black Anodize, 4027-3410-026-O
Outerwild AR15 Complete Premium Upper Receiver, 5.56NATO, 14.5in, 1-7 Twist, 13in M-LOK Handguard, Black Anodize, 4027-3410-026-O
2 of 3 images
Outerwild AR15 Complete Premium Upper Receiver, 5.56NATO, 14.5in, 1-7 Twist, 13in M-LOK Handguard, Black Anodize, 4027-3410-026-O
Outerwild AR15 Complete Premium Upper Receiver, 5.56NATO, 14.5in, 1-7 Twist, 13in M-LOK Handguard, Black Anodize, 4027-3410-026-O
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Outerwild AR15 Complete Premium Upper Receiver, 5.56NATO, 14.5in, 1-7 Twist, 13in M-LOK Handguard, Black Anodize, 4027-3410-026-O

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Questions & Answers
Customer Reviews
Helpful Positive Review
Premium Quality and Performance by S. Templar, D.D., Verified Owner, November 20, 2024
Outerwild builds high-end premium AR weapons and parts. Their Saltwater Arms brand is great and perfect for the intended purposes. The Outerwild branded stuff is premium kit. Top quality fit, finish, etc. all around. If you are looking for top qu...
Read More...
1/1 found this helpful
Helpful Positive Review
Top Tier Quality by S. Templar, D.D., Verified Owner, December 3, 2024
I consider Outerwild and 3rd Gen Tactical to be about equal. They are both extremely high-quality, very well finished, and absolutely reliable. You will not find better unless you are looking for something very specific. On the civilian side, thes...
Read More...
2/2 found this helpful
Read All 2 Reviews
Caliber:
5.56x45mm NATO
Overall Length:
22.9 in
Barrel Length:
14.5 in
Barrel Profile:
Government
Gas System Length:
Carbine Length
Barrel Twist Rate:
1-7
Firearms Threads Per Inch:
1/2x28
Handguard Type:
Free-Float
Muzzle Device:
Flash Hider
Finish:
Anodize
Color:
Black
Handguard Length:
13 in
Barrel Material:
4150 Chrome Moly Vanadium

Code: 5UV-URC-OA5NCP-4027-3410-026-O

MPN: 4027-3410-026-O

UPC: 850046695650

List: $515.95Save $10.00
$505.95

ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

Product Info for Outerwild AR15 5.56NATO Complete Premium Upper Receiver

The perfect AR15 complete upper receiver for your lower, without all the tools required to build it. Outerwilds complete upper receivers are made from the highest quality made in specialized factories components. In-house at Outerwild we produce the barrel, handguard, upper receiver and BCG. Each complete upper is assembled by Outerwilds gunsmiths and fully tested to ensure that your build will function the first time. Compatible with any Mil-Spec dimensions AR15 lower receiver.image

Specifications for Outerwild AR15 5.56NATO Complete Premium Upper Receiver:

Manufacturer: Outerwild
Caliber: 5.56x45mm NATO
Overall Length: 22.9 in
Barrel Length: 14.5 in
Barrel Profile: Government
Gas System Length: Carbine Length
Barrel Twist Rate: 1-7
Firearms Threads Per Inch: 1/2x28
Handguard Type: Free-Float
Muzzle Device: Flash Hider
Finish: Anodize
Color: Black
Fabric/Material: 7075-T6 Aluminum
Handguard Length: 13 in
Gun Rail: M-LOK
Gun Type: Rifle
Gun Make: AR Platform
Gun Model: AR-15
Barrel Material: 4150 Chrome Moly Vanadium
Magazine Included: No

Features of Outerwild AR15 5.56NATO Complete Premium Upper Receiver

  • 14.5" Barrel, 4150 CMV, Carbine Length, 1:7 Twist, Government Profile
  • 13" Premium Free Float M-LOK Handguard
  • Billet 7075-T6 Upper Receiver, Hard Coat Anodized
  • BCG: 9310 Bolt, Billet Extractor, Blacknitride+ finish by H&M
  • A2 Extended Flash Hider, Blacknitride+ finish by H&M
  • Ambidextrous Warhammer MOD2 AR15 Charging Handle by Breek Arms Billet
  • Laser Branded Outerwild
  • Retail Packaged

Package Contents:

  • Outerwild AR15 5.56NATO Complete Premium Upper Receiver
  • Stainless Steel Barrel Nut
  • Screws

What firearm models does the manufacturer say Outerwild AR15 5.56NATO Complete Premium Upper Receiver is compatible with?

The manufacturer says that Outerwild AR15 5.56NATO Complete Premium Upper Receiver is compatible with AR-15

Outerwild AR15 5.56NATO Complete Premium Upper Receiver Orderable Models

List of Orderable Models

  • Outerwild AR15 Complete Premium Upper Receiver, 5.56NATO, 14.5in, 1-7 Twist, 13in M-LOK Handguard, Black Anodize, 4027-3410-026-O , MPN: 4027-3410-026-O , UPC: 850046695650 , Code: 5UV-URC-OA5NCP-4027-3410-026-O

Outerwild AR15 5.56NATO Complete Premium Upper Receiver Unavailable & Discontinued Models

List of Unorderable Models

  • Outerwild AR15 Complete Premium Upper Receiver, 5.56NATO, 16in, 1-7 Twist, 13in M-LOK Handguard, Black Anodize, 4027-3410-028-O , MPN: 4027-3410-028-O , UPC: 850046695629 , Code: 5UV-URC-OA5NCP-4027-3410-028-O
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Last updated 2026-07-05 UTC.