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. This 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