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 16" 5.56 NATO TR SERIES UPPER RECEIVER
$199.00 - $219.00ALWAYS ARMED 16" 5.56 NATO TR SERIES 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...$199.00 - $219.00 -
On Sale
ALWAYS ARMED 7.5" 5.56 NATO BR SERIES UPPER RECEIVER
Sale: $189.00MSRP: $289.00Always Armed 7.5" 5.56 NATO BR Series Upper Receiver 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...Sale: $189.00MSRP: $289.00 -
ALWAYS ARMED 7.5" 5.56 NATO GEN 1 PISTOL KIT
$509.00 - $529.00Always Armed 7.5" 5.56 NATO Gen 1 Pistol Kit 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...$509.00 - $529.00 -
On Sale
ALWAYS ARMED 7.5" 5.56 NATO GEN 1 UPPER RECEIVER
$189.00 - $209.00Always Armed 7.5" 5.56 NATO Gen 1 Upper Receiver 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...$189.00 - $209.00 -
Out of stockOn Sale
ALWAYS ARMED 7.5" 5.56 NATO OCTO SERIES UPPER RECEIVER
$199.00 - $219.00Always Armed 7.5" 5.56 NATO OCTO Series Upper Receiver 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...$199.00 - $219.00 -
Out of stockOn Sale
ALWAYS ARMED 7.5" 5.56 NATO TR SERIES UPPER RECEIVER
$189.00 - $209.00Always Armed 7.5" 5.56 NATO TR Series Upper Receiver 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...$189.00 - $209.00 -
Always Armed Gen 1 10.5" 5.56 Upper Receiver Without Forward Assist
$309.00Build a streamlined, ultra-compact firearm setup with the Always Armed Gen 1 10.5" 5.56 Upper Receiver Without Forward Assist. Designed for low-profile tactical builds, AR pistols, and short-barreled...$309.00 -
Out of stockOn Sale
Always Armed OCT2 10.5" 5.56 Upper Receiver
Sale: $189.00MSRP: $309.00Build a high-performance AR pistol or short-barreled rifle (SBR) with the Always Armed OCT2 10.5" 5.56 Upper Receiver. Engineered for compact handling, durability, and tactical adaptability, this...Sale: $189.00MSRP: $309.00 -
On Sale
GHOST FIREARMS 7.5" 5.56 FLASH CAN UPPER RECEIVER WITH TACTICAL GRAPE 9" RAIL
Sale: $299.00MSRP: $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...Sale: $299.00MSRP: $349.00 -
Out of stockOn Sale
Grid Defense 16" 5.56 Upper Receiver With 12" Rail - Tequila Sunrise
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 Upper Receiver With 12" Rail - Tequila Sunrise Tequila Sunrise Cerakote Finish Chambered in 5.56 1:7 Twist Rate 1/2x28 TPI Thread Pitch 12" Free Float M-Lok Rail 16" 1:7 4150...Sale: $329.00MSRP: $399.00 -
Out of stockOn Sale
Grid Defense 7.5" 5.56 Upper Receiver - Periwinkle
Sale: $259.00MSRP: $379.00Grid Defense 7.5" 5.56 Upper Receiver - Periwinkle Finished in Periwinkle Cerakote AR15 Skeletonized Upper Mil Spec 7075-T6 Upper Receiver 7.5" 1:7 Twist 4150 M4 Barrel - Black Nitride 7"...Sale: $259.00MSRP: $379.00 -
Out of stock
Grid Defense Limited Edition 16" 5.56 NATO Upper with Strike Industries Accessories - Periwinkle/Blue
$502.85Grid 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...$502.85 -
Out of stock
Grid Defense Stainless Steel 10.5" 5.56 Upper Receiver - Tactical Grape
$399.00Grid Defense Stainless Steel 10.5" 5.56 Upper Receiver Purple 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...$399.00 -
Out of stockOn Sale
Grid Defense 16" 5.56 Upper Receiver With 12" Rail - Pink Champagne
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 Upper Receiver With 12" Rail - Pink Champagne Pink Champagne Cerakote Finish Chambered in 5.56 1:7 Twist Rate 1/2x28 TPI Thread Pitch 12" Free Float M-Lok Rail 16" 1:7 4150 M4...Sale: $329.00MSRP: $399.00 -
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$534.99 -
Andro Corp 5" 5.56 Upper Receiver - Black
$415.00Andro Corp 5" 5.56 Upper Receiver - Black 4150 CMV Melonite 1:5 Twist Rate M4 Feed Ramps Micro Length Gas System .750 Low Profile Gas Block QPQ Corrosion Resistant Finish A2 Flash...$415.00 -
Out of stockOn Sale
Ghost Vital 7.5" 5.56 Stainless Steel Pistol Kit
Sale: $419.00MSRP: $479.00Ghost Firearms Vital 7.5" 5.56 Upper Stainless Steel - Black Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider - Black 7.5" 1:7 Twist 416R Stainless Steel Barrel Pistol Length Gas...Sale: $419.00MSRP: $479.00