SKU: SPKSTU5025-M4S
UPC: 815648021030
The Spike's Tactical 556 NATO M4 LE upper receiver is a complete, test-fired upper assembly designed for duty and training applications. This 16-inch M4 profile upper is ready for immediate installation on a compatible lower receiver, requiring no assembly or additional work. It is ideal for law enforcement, military personnel, and serious rifle builders seeking a reliable and pre-tested upper.
This upper features a forged upper receiver paired with a 16-inch barrel chambered in 5.56 NATO, along with an M16 Complete BCG, Phosphate Finish. The 16-inch barrel length strikes a balance between velocity retention and maneuverability, making it a proven configuration for close-quarters training. The phosphate finish on the carrier enhances corrosion resistance, suitable for various duty environments.
The assembly serves those who require a drop-in upper without the hassle of sourcing and assembling individual components. The test-fire documentation from Spike's facility confirms function before delivery, ensuring reliability. This upper is a practical choice for users who prioritize performance and ease of installation in their firearms.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
