5.56mm Uppers
AR15 Upper receivers in 556 NATO available in 16", 10.5" and 7.5" lengths for your next build. Check out our AR-15 Uppers in Cerakote colors like FDE and Burnt Bronze. Please keep in mind these are the standard 5.56x45 Nato upper receivers and can use 5.56 or .223 ammo. If you are looking for something a little different than your standard rifle upper make sure you checkout the pistol upper receivers we offer and keep an eye out for new uppers and cerakote colors.
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GRID DEFENSE GX2 10.5" 5.56 UPPER RECEIVER - BLACK
Now: $329.00Was: $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 Block Carbine Length Gas System 9" Grid Defense GX2...Now: $329.00Was: $379.00 -
Grid Defense Limited Edition 16" 5.56 NATO Upper with Strike Industries Accessories - Periwinkle/Blue
$502.85Grid Defense 16" 5.56 Upper Receiver - 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 Mil-Spec 7075-T6 Upper Receiver Strike Industries...$502.85Qty in Cart: 0Quantity:Price:$502.85Subtotal: -
Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver With Free MBUS Sights - Tungsten Gray
$496.50Grid 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 Pistol Length Gas System Grid Defense 7" M-Lok Free Float...$496.50Qty in Cart: 0Quantity:Price:$496.50Subtotal: -
US MILITARY 10.5" 5.56 NATO FLASH CAN UPPER RECEIVER WITH 12" JESTER RAIL - BLACK
Now: $229.00Was: $299.00VETERAN'S DAY 10.5" 5.56 NATO FLASH CAN UPPER RECEIVER WITH 12" MLOK RAIL - BLACK Hard Coat Black Anodized Finish Mil-Spec AR15 Upper Receiver Mil-Spec Forward Assist Laser Engraved Dust Cover 12" Jester Free Float M-LOK Rail 10.5" 1:7...Now: $229.00Was: $299.00Qty in Cart: 0Quantity:Price:Now: $229.00Was: $299.00Subtotal: -
ALWAYS ARMED OCT2 SERIES 16" 5.56 NATO UPPER RECEIVER - BLACK
Now: $219.00Was: $269.00ALWAYS ARMED OCT2 SERIES 16" 5.56 NATO UPPER RECEIVER - BLACK Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length Gas System ...Now: $219.00Was: $269.00