Spikes STU5025M4S Complete Upper 5.56x45mm NATO 16″ Black Phosphate Barrel, 7075-T6 Aluminum Black Receiver, M4 Double Head Shield Handguard for M4 Carbine


Ramp up your M4 Carbine with the Spikes STU5025M4S Complete Upper. Experience the intersection of law enforcement standards, robust build, and excellent performance.

SKU: 815648021030 Categories: , , ,


Discover the Spikes STU5025M4S Complete Upper for M4 Carbine. Designed for law enforcement, it’s now available for every shooter out there.

Mil-Spec Compliance

  • Fully compliant with Mil-spec standards.
  • Ensures optimal performance for shooters of all budgets.

Premium Build

  • Spike’s Tactical 16″ Mil-spec barrel.
  • Features a 1:7 twist for optimal bullet stabilization.

M4 Barrel Profile and Gas System

  • M4 barrel profile included.
  • Carbine length gas system for reliable cycling.

Front Sight Base and Gas Seat

  • F-marked A2 front sight base for clear sight picture.
  • .750″ diameter gas seat included.

Bolt Carrier Group and Handguards

  • Spike’s Tactical Mil-spec M16 bolt carrier group for reliable function.
  • M4 double heat shield handguards for enhanced comfort and protection.

Additional Features

  • Comes with an A2 flash hider to reduce muzzle flash.
  • Crafted from 7075-T6 Aluminum with a black phosphate barrel and receiver for additional durability.

Upgrade your M4 Carbine with the Spikes STU5025M4S Complete Upper, the perfect blend of performance, strength, and Mil-spec standards.

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