5.56mm Uppers
Our 5.56mm uppers are made from the highest quality materials, ensuring that they can withstand even the most challenging shooting conditions. We offer a variety of barrel lengths and styles to fit your specific needs, as well as handguards, charging handles, and other components to complete your build.
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Out of stockOn Sale
Grid Defense 16" 5.56 Upper Receiver - Gold
Sale: $339.00MSRP: $409.00Grid Defense 16" 5.56 Upper Receiver - Gold Finished in FX Gold Cerakote Chambered in 5.56x45 NATO 14" M-Lok Rail 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System A2 Flash Hider Mil-Spec 7075-T6 Upper ReceiverSale: $339.00MSRP: $409.00 -
On Sale
Grid Defense 16" 5.56 Upper Receiver With 12" Rail - Gold
Sale: $339.00MSRP: $409.00Grid Defense 16" 5.56 Upper Receiver With 12" Rail - Gold Finished in FX Gold Cerakote Chambered in 5.56x45 NATO 12" Free Float M-LOK Handguard 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System A2 Flash Hider Mil-Spec 7075-T6...Sale: $339.00MSRP: $409.00 -
On Sale
Grid Defense HEX 16" 5.56 NATO Upper Receiver - Gold
Sale: $349.00MSRP: $419.00Grid Defense HEX 16" 5.56 NATO Upper Receiver - Gold FX Gold Cerakote Finish Chambered in 5.56 NATO 16" 4150 Nitride Barrel 1:7 Twist Rate 1/2x28 TPI Thread Pitch Black A2 Muzzle Device Carbine Length Gas System Low Profile Gas Block Grid...Sale: $349.00MSRP: $419.00