Spike’s Tactical M4 16″ Complete Upper – 5.56 NATO – Black

  • Description
  • Additional information
  • Reviews (0)


Spike’s Tactical M4 16″ Complete Upper Assembly 5.56 NATO in Black

Looking for a top-quality M4 upper assembly that you can rely on? Look no further than the Spike’s Tactical M4 16″ Complete Upper Assembly. These excellent upper features a 16″ barrel chambered in 5.56 NATO, with a M4 profile and 1 in 7″ twist rate. It’s constructed from forged 7075-T6 aluminum and is hard coat anodized in black for a durable finish. Plus, it comes with a Spike’s Tactical Phosphate M16 Bolt Carrier Group for added peace of mind. This BCG has been high pressure tested and magnetic particle inspected and is finished off with a laser engraved Spike’s ST spider logo. The gas tube is carbine length and black nitride finished inside and out, for a smooth operation.


Spike’s Tactical M4 16″ 5.56 NATO Upper Features:

  • 7075-T6 Forged Aluminum Upper Receiver
  • 16″ M4 Profile Barrel
  • Chrome Lined
  • 1 in 7″ Twist
  • 1/2″ x 28 muzzle thread
  • 5.56 NATO
  • .750″ Gas Block Seat
  • MIL-SPEC Phoshate coated
  • A2 Front Sight Base
  • M4 Handguard with double heat shield
  • Carbine Gas Tube
  • Forged Aluminum Charging Handle with MIL-SPEC Type III coating
  • M16 Bolt Carrier Group Phosphate coated
  • High Pressure Tested
  • Magnetic Particle Inspected
  • ST Spider Logo laser engraved
  • Weight: 4lb 2oz
  • SKU#- STU5025-M4S

As always, all Spike’s Tactical products boast a Lifetime Warranty from manufacturer defects.

Pairs well with Spikes Lower Parts Kit.

WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information: www.P65Warnings.ca.gov


Additional information

Weight 5 lbs

Barrel Chamber

Barrel Twist

Barrel Thread

Barrel Material


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.