New HWK XL Suppressor-Ready Handguard | Check it out

Spike’s Tactical Complete Assembled AR-15 Upper Receiver with 16 Inch M4 Profile 5.56 NATO FN Barrel

Be the first to review

SKU: STU5025-M4S  |  UPC: 815648021030

Out of Stock
Orders will Ship within 1 Business Day
Backed by the Spike's Tactical Lifetime Warranty
Only 1 remaining. Order now!
TOP ADD-ON'S
MI 7" AR-15 M-Series M-LOK Two Piece Drop-In Handguard - Carbine Length

Midwest Industries 7" AR-15 M-Series M-LOK Two Piece Drop-In Handguard - Carbine Length

$146.95
Magpul MBUS PRO Rear Back-Up Sight - Steel - MAG276

Magpul MBUS PRO Rear Back-Up Sight - Steel - MAG276

$104.49

Complete Upper with M4 Profile Hammer Forged FN Barrel

Rugged and ready for duty, this complete upper from Spike’s Tactical features a cold hammer forged barrel made by FN, with a chrome lined bore with 1/7 twist. With a classic front sight post ready to be paired with a backup iron sight, and an included mil-spec bolt carrier group, this upper has everything you need and expect out of a rifle that always does its job.

Features

  • Hammer Forged and Chrome Lined FN Barrel
  • Phosphated and Chrome Lined Bolt Carrier Group
  • Mil Spec Charging Handle
  • Midlength Gas System for Smoother Recoil

Specifications

  • Caliber: 5.56 NATO
  • Barrel Length: 16″
  • Barrel Twist: 1/7
  • Barrel Material: 4150 CMV
  • Barrel Bore Lining: Chrome
  • Gas System: Carbine
  • Muzzle Threads: 1/2×28
  • Gas Block Diameter: .750″
  • Overall Length: 24.5″
  • Weight: 4 lbs 2 oz.

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Spike’s Tactical Lifetime Warranty

  • Spike’s Tactical products have always been designed and built to the higher standards demanded by the discriminating consumer. To clearly demonstrate that Spike’s Tactical products offer world-class quality, Spike’s Tactical offers a full lifetime warranty on all Spike’s Tactical built products. The lifetime warranty will remain in full force and effect as long as Spike’s Tactical is still in operation.
  • The lifetime warranty covers any manufacturing defects that may render the product unsafe, inoperable, out of spec, to include cosmetic defects from the factory. Cosmetic defects are only covered for the first 10 days from the original shipping date from Spike’s Tactical. It is your responsibility to thoroughly inspect your order from Spike’s Tactical and let us know immediately if there is an issue. Cosmetic issues occurring outside the 10-day window will be addressed on a case-by-case basis.
  • “Please note that due to the day-to-day variations of anodizing black-dye tanks, a slight variation in the color black is normal and expected.”
  • Should you find any of the above issues with your Spike’s Tactical products we will repair or replace the product to meet Spike’s Tactical Industry Standards. There is no need to cut any Spike’s Tactical products into pieces should you find them to be out of spec. Although we have been known to offer to replace products cut up by a specific customer, we find that a simple phone call is a more efficient way of resolving an issue.
  • Sales Tax, Shipping charges, and FFL fees are nonrefundable. If it is a Spike’s Tactical mistake we will cover shipping and FFL fees. On Non-Spike’s Tactical built products all warranties are through the original manufacturer only; no warranties are expressed or implied by Spike’s Tactical. Prices do not include shipping and handling. Florida residents add 6.5% sales tax.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.

Leave your review
Rating

Customers who viewed this item also viewed these products

Spike's Tactical Complete Assembled AR-15 Upper Receiver with 16 Inch...

$630.00
Complete Upper with Midlength Hammer Forged FN Barrel Rugged and ready for duty, this

Spike's Tactical Carbine Barrel - 5.56/.223 - 16" Length -...

$287.96
Spike’s Tactical Chrome-Lined M4 Barrel Start your build the right way with an Spike’s
Radical Firearms 16" 5.56 NATO Complete Upper Receiver with M-LOK Handguard - AT3 Tactical

Radical Firearms 16" 5.56 NATO Complete Assembled AR-15 Upper Receiver...

(1)
$449.99
Complete Budget-Friendly Upper Receiver for 5.56 NATO AR Builds The Radical Firearms 16″ 5.56
Daniel Defense DDM4V7 16 Inch Complete 5.56 AR-15 Upper Receiver - AT3 Tactical

Daniel Defense DDM4V7 16 Inch Complete Assembled 5.56 AR-15 Upper...

$1,156.00
Daniel Defense Upper with Chrome Lined Government Profile Barrel Daniel Defense. Hardly anything else

AT3 Tactical AR-15 Barrel - 16" - 5.56 NATO -...

(1)
$125.00
16 Inch Government 5.56 NATO Barrel by AT3 Tactical With a sturdy profile and
Ballistic Advantage 5.56 16" Barrel - M4 Carbine Length 1:7 Twist - 4150 CMV Nitride - Modern Series

Ballistic Advantage M4 AR-15 Barrel - 16" - 5.56 NATO...

(2)
$151.99
Ballistic Advantage Modern Series barrels feature precision-machined 4150 CMV steel, durable Nitride coating, and

AT3 Tactical AR-15 Barrel - 16" - 5.56 NATO -...

(1)
$125.00
16 Inch Pencil 5.56 NATO Barrel by AT3 Tactical Upgrade your AR-15 with a
Daniel Defense DDM4V7 16 Inch Complete Lightweight 5.56 AR-15 Upper Receiver - AT3 Tactical

Daniel Defense DDM4V7 16 Inch Complete Assembled Lightweight 5.56 AR-15...

$1,156.00
Daniel Defense Upper with Chrome Lined Lightweight Profile Barrel Daniel Defense’s lightweight barrels make

Geissele Super Duty MOD1 16 Inch 5.56mm Complete Assembled AR-15...

$1,285.20
Combat-Ready Geissele Engineering The Geissele Super Duty MOD1 16″ Complete Upper is a top-tier,
Radical Firearms 16" 6.5 Grendel Complete Upper Receiver with M-LOK Handguard - AT3 Tactical

Radical Firearms 16" 6.5 Grendel AR-15 Complete Assembled Upper Receiver...

$649.99
Complete Budget-Friendly Upper Receiver for 6.5 Grendel AR Builds The Radical Firearms 16″ 6.5
Anderson 5.56 16 inch M4 Barrel, Assembled Front Sight – Carbine Length

Anderson 5.56 16 inch M4 Barrel, Assembled Front Sight –...

(17)
$186.74
An Excellent Pick for your Next Build – Affordable and Highly Recommended The perfect

AT3 Tactical AR-15 Barrel - 10.5" - 5.56 NATO -...

$112.50$95.63
10.5 Inch 5.56 NATO Barrel by AT3 Tactical This 10.5 inch long 5.56 NATO
AT3™ Complete Rifle AR-15 Upper - .223/5.56 16" Ballistic Advantage Barrel - With Nickel Boron BCG and Mil-Spec CH

AT3™ .223/5.56 16" Complete Assembled AR-15 Upper - With Nickel...

$550.99
16 Inch Lightweight AT3 Upper with 15 Inch Handguard AT3 Complete Upper assemblies are
Radical Firearms 16" .300 Blackout Complete Upper Receiver with M-LOK Handguard - AT3 Tactical

Radical Firearms 16" .300 Blackout Complete Assembled AR-15 Upper Receiver...

$449.99
Complete Budget-Friendly Upper Receiver for .300 Blackout AR Builds The Radical Firearms 16″ .300

Ballistic Advantage 16 Inch HBAR Profile 5.56 NATO AR-15 Barrel...

(2)
$152.00
High Accuracy with a Barrel that Won’t Flex Adding weight to the AR-15 can

Questions & Answers

Don't see the answer
you're looking for?

Loading questions...