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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On Sale
Grid Defense 7.5" 5.56 Upper Receiver - Blue Titanium
Sale: $299.00MSRP: $379.00Grid Defense 7.5" 5.56 Upper Receiver Finished in Blue Titanium Cerakote Mil Spec 7075-T6 Upper Receiver 7.5" 1:7 Twist 4150 M4 Barrel - Black Nitride 7" Grid Defense Octagon M-Lok...Sale: $299.00MSRP: $379.00 -
Out of stockOn Sale
Grid Defense 7.5" 5.56 Upper Receiver - Tequila Sunrise
Sale: $299.00MSRP: $379.00Grid Defense 7.5" 5.56 Upper Receiver - Tequila Sunrise Mil-Spec Dust Cover and Forward Assist Finished in Tequila Sunrise Cerakote Mil Spec 7075-T6 Upper Receiver 7.5" 4150 M4 Barrel - Black...Sale: $299.00MSRP: $379.00 -
On Sale
Grid Defense Stainless Steel 10.5" 5.56 Upper Receiver - OD Green
Sale: $299.00MSRP: $399.00Grid Defense Stainless Steel 10.5" 5.56 Upper Receiver Magpul Olive Drab Green Cerakote Finish Chambered in 5.56 NATO Grid Defense Mil Spec 7075 T6 Upper Receiver Grid Defense 9" M-Lok Free Float...Sale: $299.00MSRP: $399.00 -
On Sale
Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver - Blue Titanium
Sale: $299.00MSRP: $399.00Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver Blue Titanium Cerakote Finish Chambered in 5.56 NATO Stainless Steel A2 Flash Hider 7.5" 1:7 Twist 416R Stainless Steel Barrel - M4...Sale: $299.00MSRP: $399.00 -
On Sale
Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver - Tungsten Gray
Sale: $299.00MSRP: $399.00Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver Tungsten Gray Cerakote Finish Chambered in 5.56 NATO Stainless Steel A2 Flash Hider 7.5" 1:7 Twist 416R Stainless Steel Barrel - M4 Profile...Sale: $299.00MSRP: $399.00 -
On Sale
Always Armed Gen 1 16" 5.56 Upper Receiver Without Forward Assist
Sale: $189.00MSRP: $319.00Streamline your full-length rifle build with the Always Armed Gen 1 16" 5.56 Upper Receiver Without Forward Assist. Built for shooters who prefer a smooth, snag-free profile, this complete upper...Sale: $189.00MSRP: $319.00 -
Out of stockOn Sale
Grid Defense 16" 5.56 Upper Receiver - Gold
Sale: $329.00MSRP: $399.00Grid 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...Sale: $329.00MSRP: $399.00 -
Out of stockOn Sale
Grid Defense 7.5" 5.56 Upper Receiver - Pink Champagne
Sale: $299.00MSRP: $379.00Grid Defense 7.5" 5.56 Upper Receiver - Pink Champagne Finished in Pink Champagne Cerakote AR15 Skeletonized Upper Mil Spec 7075-T6 Upper Receiver 7.5" 1:7 Twist 4150 M4 Barrel - Black Nitride 7"...Sale: $299.00MSRP: $379.00 -
Out of stockOn Sale
GRID DEFENSE GX2 10.5" 5.56 UPPER RECEIVER - BLACK
Sale: $299.00MSRP: $379.00Grid Defense GX2 10.5" 5.56 Upper Receiver Hard Coat Black Anodized Chambered in 5.56x45 NATO 7075-T6 Milspec Upper Receiver 10.5" 1:7 Twist 4150 Steel M4 Barrel - Black Nitride .750 Low Profile Gas...Sale: $299.00MSRP: $379.00 -
On Sale
Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver - FDE
Sale: $299.00MSRP: $399.00Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver Magpul Flat Dark Earth Cerakote Finish Chambered in 5.56 NATO Stainless Steel A2 Flash Hider 7.5" 1:7 Twist 416R Stainless Steel Barrel - M4...Sale: $299.00MSRP: $399.00 -
On Sale
Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver - OD Green
Sale: $299.00MSRP: $399.00Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver Magpul OD Green Cerakote Finish Chambered in 5.56 NATO Stainless Steel A2 Flash Hider 7.5" 1:7 Twist 416R Stainless Steel Barrel - M4 Profile...Sale: $299.00MSRP: $399.00 -
On Sale
ALWAYS ARMED 16" 5.56 NATO STAINLESS STEEL UPPER RECEIVER WITH 12" RAIL, SIGHTS, AND AFG - BLACK
Sale: $219.00MSRP: $369.00ALWAYS ARMED 16" 5.56 NATO STAINLESS STEEL UPPER RECEIVER WITH 12" RAIL, SIGHTS, AND AFG - BLACK Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:7 Twist...Sale: $219.00MSRP: $369.00 -
Out of stockOn Sale
Grid Defense 16" 5.56 Upper Receiver - Periwinkle
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 Upper Receiver -Â Periwinkle Periwinkle Cerakote Finish Chambered in 5.56x45 NATO 14" M-Lok Rail 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System A2 Flash Hider...Sale: $329.00MSRP: $399.00 -
Out of stockOn Sale
Grid Defense 16" 5.56 Upper Receiver - Pink Champagne
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56Â AR-15 Upper Receiver - Pink Champagne Pink Champagne Cerakote Finish Pink Champagne Complete Upper Chambered in 5.56x45 NATO 14" M-Lok Rail 16" 1:7 4150 M4 Barrel - Black...Sale: $329.00MSRP: $399.00 -
Out of stock
Grid Defense GX2 7.5" 5.56 Flash Can Upper Receiver - Tungsten Gray
$399.00Grid Defense GX2 7.5" 5.56 NATO Flash Can Upper Mil-Spec 7075-T6 Upper Receiver 7.5" 1:7 Twist 4150 M4 Barrel - Black Nitride Chambered in 5.56x45 NATO 9" Grid Defense GX2 Octagon M-Lok Rail Dimpled...$399.00 -
Out of stockOn Sale
Grid Defense HEX 16" 5.56 NATO Upper Receiver - Gold
Sale: $329.00MSRP: $399.00Grid 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...Sale: $329.00MSRP: $399.00 -
Out of stock
GHOST FIREARMS 16" 5.56 FRONT SIGHT UPPER WITH BCG/CH - FDE
$449.00GHOST FIREARMS 16" 5.56 FRONT SIGHT UPPER WITH BCG/CH - FDE Made in the USA 16" 5.56 NATO Barrel BCG and Charging Handle Included Magpul FDE Hand Guard A2 Muzzle Device Black Anodized Mil Spec Upper...$449.00 -
GHOST FIREARMS 7.5" 5.56 FLASH CAN UPPER RECEIVER WITH BLUE TITANIUM 9" RAIL
$349.00GHOST FIREARMS 7.5" 5.56 FLASH CAN UPPER RECEIVER Proudly Made in the USA 7075 T6 Forged Aluminum Mil-Spec AR15 Upper Receiver - Black Anodized 7.5" 1:7 Twist 4150 Steel Barrel Pistol Length Gas...$349.00 -
On Sale
Grid Defense 16" 5.56 Upper Receiver With 12" Rail - Gold
Sale: $329.00MSRP: $399.00Grid 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...Sale: $329.00MSRP: $399.00 -
Out of stock
Grid Defense 16" 5.56 Upper Receiver With Stainless Steel Flash Hider and Skeleton Grip - Tactical Grape
$488.00Grid Defense 16" Upper Receiver Purple Cerakote Finish Chambered in 5.56x45 NATO 14" M-Lok Rail 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System Stainless Steel A2 Flash Hider...$488.00