AR15 - 5.56 NATO
Shop our selection of 5.56 complete uppers and build kits for your next AR-15. Designed for the best performance possible while not breaking the bank. Use these to upgrade your current gun or have a fresh start for something unique. Whether you're building a self defense pistol or a rifle for hunting these uppers will do the job.
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On Sale
ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO FLASH CAN UPPER RECEIVER - FDE
Sale: $229.00MSRP: $339.00ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO FLASH CAN UPPER RECEIVER - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Pistol Length Gas...Sale: $229.00MSRP: $339.00 -
On Sale
ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER WITH 15" M-LOK QUAD RAIL - FDE
Sale: $219.00MSRP: $329.00ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER WITH 15" M-LOK QUAD RAIL - FDE Made in the USA 16" 4150 Barrel Chambered in 5.56 NATO 15" Free Floating MLOK Quad Rail Magpul Flat Dark Earth Cerakote Finish Carbine Length Gas System A2 Muzzle Device 1:7 Twist...Sale: $219.00MSRP: $329.00 -
On Sale
GHOST FIREARMS 7.5" 5.56mm with 7" M-Lok Pistol Kit - FDE
Sale: $439.00MSRP: $579.00GHOST FIREARMS 7.5" 5.56 NATO PISTOL KIT - FDE Finished in Flat Dark Earth Cerakote Chambered in .223/5.56 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 1/2x28 7.5" 1:7 Twist 4150 Chrome Moly Steel Barrel...Sale: $439.00MSRP: $579.00 -
On Sale
ALWAYS ARMED 16" 5.56 NATO UPPER WITH 15" TR RAIL TRINITY FORCE SIGHTS RIFLE KIT - FDE
Sale: $389.00MSRP: $519.98Always Armed 16" 5.56 NATO Upper With 15" TR Rail Trinity Force Sights Rifle Kit - 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...Sale: $389.00MSRP: $519.98 -
On Sale
Ghost Firearms 10.5" 5.56 Flash Can Upper Receiver Pistol Kit - FDE
Sale: $449.00MSRP: $599.00Ghost Firearms 10.5" Flash Can Upper Receiver Pistol Build Kit Finished in Magpul Flat Dark Earth Cerakote Milspec 7075-T6 Upper Receiver 10.5" 1:7 4150 M4 Barrel - Black Nitride Chambered in 5.56x45 NATO .750 Low Profile Gas Block Carbine Length Gas...Sale: $449.00MSRP: $599.00 -
Out of stock
7.5" 5.56 NATO COMPLETE UPPER RECEIVER WITH 7" KEYMOD RAIL, BCG, CHARGING HANDLE & SIGHTS - FDE
$429.007.5" 5.56 NATO COMPLETE UPPER RECEIVER WITH 7" KEYMOD RAIL, BCG, CHARGING HANDLE & SIGHTS Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:7 Twist 4150 Black Nitride Barrel Chambered in 5.56 NATO A2...$429.00 -
On Sale
Grid Defense Stainless Steel 16" 5.56 Upper Receiver - Flat Dark Earth
Sale: $329.00MSRP: $429.00Grid Defense Stainless Steel 16" 556 Upper Receiver - Flat Dark Earth FDE Cerakote Finish Chambered in 5.56 NATO Stainless Steel A2 Flash Hider 16" 1:7 Twist 416R Stainless Steel Barrel - M4 Profile Carbine Length Gas System Grid Defense 14" M-Lok Free...Sale: $329.00MSRP: $429.00 -
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 -
On Sale
ALWAYS ARMED 7.5" 5.56 NATO PISTOL KIT - MAGPUL FDE
Sale: $359.00MSRP: $499.00Always Armed 7.5" 5.56 NATO Pistol Kit - Magpul FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Pistol Length Gas System .750 Low...Sale: $359.00MSRP: $499.00 -
On Sale
ALWAYS ARMED 7.5" 5.56 NATO TR SERIES WITH TRINITY FORCE SIGHTS PISTOL KIT - FDE
Sale: $369.00MSRP: $489.98Always Armed 7.5" 5.56 NATO TR Series with Trinity Force Sights Pistol Kit - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Pistol...Sale: $369.00MSRP: $489.98 -
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