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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ALWAYS ARMED JESTER 16" 5.56 NATO UPPER RECEIVER - FDE
$319.00ALWAYS ARMED JESTER 16" 5.56 NATO UPPER RECEIVER 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 .750 Low...$319.00 -
On Sale
Grid Defense 16" 5.56 Mid Length Upper Receiver - FDE
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 Mid Length Upper Receiver - FDE Magpul Flat Dark Earth Cerakote Finish Chambered in 5.56x45 NATO 14" M-Lok Rail 16" 1:7 4150 M4 Barrel - Black Nitride Mid Length Gas System Magpul FDE Complete Upper A2 Flash Hider Mil-Spec...Sale: $329.00MSRP: $399.00 -
On Sale
ALWAYS ARMED 16" 5.56 NATO BX SERIES UPPER RECEIVER - MAGPUL FDE
Sale: $219.00MSRP: $319.00ALWAYS ARMED 16" 5.56 NATO BX SERIES UPPER RECEIVER - MAGPUL FDE 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...Sale: $219.00MSRP: $319.00 -
Ghost Firearms 7.5" 5.56 Flash Can Upper Receiver with FDE 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 System .750 Low Profile Gas Block Hard Coat Black Anodized...$349.00 -
On Sale
Grid Defense GX2 7.5" 5.56 Flash Can Upper Receiver - FDE
Sale: $329.00MSRP: $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 Flash Can Pistol Length Gas System Made in the...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense Stainless Steel 10.5" 5.56 Upper Receiver - FDE
Sale: $299.00MSRP: $399.00Grid Defense Stainless Steel 10.5" 5.56 Upper Receiver Magpul Flat Dark Earth Cerakote Finish Chambered in 5.56 NATO Grid Defense Mil Spec 7075 T6 Upper Receiver Grid Defense 9" M-Lok Free Float Hand Guard Carbine Length Gas System 10.5" 1:7...Sale: $299.00MSRP: $399.00 -
On Sale
ALWAYS ARMED 10.5" 5.56 KEYMOD UPPER RECEIVER - FDE
Sale: $209.00MSRP: $299.00ALWAYS ARMED 10.5" 5.56 KEYMOD UPPER RECEIVER - FDE Made in the USA Finished in Flat Dark Earth Cerakote Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO...Sale: $209.00MSRP: $299.00 -
Grid Defense 16" 5.56 American Flag Dust Cover Upper Receiver - FDE
$414.00Grid Defense 16" 5.56 American Flag Dust Cover Upper Receiver - Flat Dark Earth Upper Receiver Magpul Flat Dark Earth Cerakote Finish Chambered in 5.56x45 NATO 14" M-Lok Rail 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas...$414.00 -
On Sale
GHOST FIREARMS 16" 5.56 NATO UPPER RECEIVER WITH 11" RAIL - FDE
Sale: $259.00MSRP: $339.00GHOST FIREARMS 16" 5.56 NATO UPPER RECEIVER WITH 11" RAIL - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:7 Twist 4150 Steel Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length Gas...Sale: $259.00MSRP: $339.00 -
On Sale
GHOST FIREARMS 16" 5.56 NATO MID LENGTH UPPER RECEIVER - FDE
Sale: $269.00MSRP: $349.00GHOST FIREARMS 16" 5.56 NATO MID LENGTH UPPER RECEIVER - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:7 Twist 4150 Steel Mid Length Barrel with Black Nitride Finish Chambered in 5.56 NATO Mid...Sale: $269.00MSRP: $349.00 -
On Sale
Ghost Firearms 7.5" 5.56 Flash Can Upper Receiver FDE - Matching
Sale: $359.00MSRP: $399.00Ghost Firearms 7.5" 5.56 Flash Can Upper Receiver FDE - Matching Proudly Made in the USA 7075 T6 Forged Aluminum Mil-Spec AR15 Upper Receiver 7.5" 1:7 Twist 4150 M4 Barrel Black Nitride Finished in Flat Dark Earth Cerakote Pistol Length Gas...Sale: $359.00MSRP: $399.00 -
Out of stock
ALWAYS ARMED 10.5" 5.56 NATO FLASH CAN UPPER RECEIVER - MAGPUL FDE/OD GREEN LIMITED EDITION
$358.00Always Armed 10.5" 5.56 NATO Flash Can Upper Receiver - LIMITED EDITION Made in the USA Magpul FDE Mil-Spec 7075 T6 Upper Receiver Forward Assist Timber Creek Outdoors Billet Dust Cover - OD Green 10.5" 1:7 Twist 4150 Barrel with Black...$358.00 -
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 Profile Pistol Length Gas System Grid Defense 7" M-Lok...Sale: $299.00MSRP: $399.00 -
Grid Defense 16" 5.56 NATO Lightweight Quad Rail Upper Receiver - FDE
$429.00Grid Defense 16" 5.56 NATO Lightweight Quad Rail Upper Receiver - FDE FDE Cerakote Finish Chambered in 5.56 NATO A2 Flash Hider 16" 1:7 Twist Pencil Profile Barrel Mid Length Gas System .625 Low Profile Gas Block Grid Defense 14" M-Lok Free Float Quad...$429.00 -
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 Receiver$449.00 -
On Sale
ALWAYS ARMED 16" JESTER UPPER RECEIVER COMBO DEAL - 5.56 NATO/.300 BLACKOUT - FDE
Sale: $458.00MSRP: $658.00Always Armed 16" 5.56 NATO Jester Upper Receiver - FDE 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 ...Sale: $458.00MSRP: $658.00 -
Aero Precision 16" 5.56 NATO Upper Receiver - FDE
$534.99Aero Precision 16" 5.56 NATO Upper Receiver - FDE M4E1 Threaded Assembled Upper Receiver ATLAS S-ONE M-LOK Handguard of choice 16" 5.56 CMV Barrel Low Profile Gas Block and Mid-Length Gas Tube Product comes assembled This complete upper does not...$534.99