Spike's Tactical 16" 5.56 M4 LE Complete AR-15 Upper - with Front Sight Base

Manufactured by Spike's Tactical
SKU: STU5025-M4S
MPN: STU5025-M4S
Manufactured by Spike's Tactical
24 Reviews
$567.00

In Stock

Orders of non-FFL items will ship same day if ordered before 3:30pm CST (M-F). FFL orders will ship within 5 business days if transfer details are provided.

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Details

Details

The Spike's Tactical 16" 5.56 M4 Carbine Complete Upper offers the same level of quality and performance available in all their rifles. Spike’s Tactical maintains a high standard of tolerances and attention to detail in the uppers they use for complete rifle builds. Every complete upper is test fired before leaving their facility and is backed by the Spike's Tactical lifetime warranty.

Features:
  • 7075-T6 forged aluminum upper receiver. 
  • Forward assist and ejection port door.
  • 16" 5.56 NATO, chrome lined, M4 profile barrel with carbine length gas system.
  • 41V50 chrome moly vanadium steel with phosphate coating.
  • 1/2x28 thread pitch with a 1:7 twist rate.
  • M4 feed ramps.
  • Pinned A2 front sight base.
  • Double heat shielded M4 handguard.
  • Standard charging handle.
  • Phosphate coated, M16 cut, complete bolt carrier group.
  • BCG high pressure tested and magnetic particle inspected.
  • A2 flash hider.
  • Weight: 4 lbs 2 oz.
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Specifications

Barrel ContourM4
Barrel Length16
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandSpike's Tactical
Caliber Gauge5.56 NATO
ColorBlack
FinishHardcoat Anodized
Gas System LengthCarbine
Gas System TypeDirect Impingement
HandguardCarbine Length Drop-In Handguard
Muzzle DeviceA2 Flash Hider
Twist Rate1:7
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

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Ratings & Reviews

24 reviews

4.9
  • 4 stars
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Spikes tactical 16" st-15 m4 le upper receiver

by

Excellent customer service and delivery. Looking forward to ording more items soon.

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Made for hard chargers.

by

First of all I have to say that Primary Arms is a top notch outfit. Super fast delivery and easy to use website. This Spikes tactical M4 upper is worth every penny. It comes with a M-16 bolt carrier group and the entire upper meets high standards in testing. Some don't realize it but the M-16 bcg has more metal in the back end than the AR BCG giving it more heft. The upper fit tight with my Spikes punisher lower and looks sharp. The BCG is made to tight specs and this required a break-in period as most tight spec BCG's do. A good cleaning followed by some oil and a good cycling of the charging handle and rounds down range had it running like a sewing machine. Very pleased with this product and Primary Arms packaging and service.

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very pleased

by

Very fast shipping. PrimaryArms never fails! This upper is worth every penny and of course the quality of spikes speaks for itself!

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Great

by

I've used this upper for about five years now. The only problem I ever had was a Tula round glued to the chamber after excessive rapid fire along with my buddies MP15, and mine cleared much faster. I rarely clean this upper and shoot a lot of 22lr through it, great upper with quality comments.

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