AR-15 | AR-10
Grid Defense is the first stop for your next AR15 build with our wide variety of barreled upper receivers to choose from. We offer a multitude of options from barrel length, color, handguard designs, and caliber. Whether you are a beginner or experienced gunsmith our uppers are designed to be easy to expand while staying cost friendly. Check out our Upper and Lower parts for everything else you need to complete your build.
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Out of stockOn Sale
Grid Defense 18" 6.5 Creedmoor Billet Upper - OD Green
Sale: $389.00MSRP: $579.00Grid Defense 18" 6.5 Creedmoor Billet Upper - OD Green Upper Specifications Billet Upper Receiver Machined from 6061 Aluminum Fits DPMS Gen 1 Lower Receivers Made in the USA High Profile 15"...Sale: $389.00MSRP: $579.00 -
On Sale
Grid Defense 20" .308 Winchester Billet Upper - Blue Titanium
Sale: $449.00MSRP: $589.00Grid Defense 20" .308 Upper Receiver - Blue Titanium DPMS Pattern upper 20" 4150 Chrome Moly Barrel Rifle Gas System Chambered in .308 Winchester 1:10 Twist Rate 5/8x24 Thread Pattern Axe...Sale: $449.00MSRP: $589.00 -
On Sale
Grid Defense 20" 350 Legend Upper Receiver - Burnt Bronze
Sale: $349.00MSRP: $419.00Grid Defense 20" 350 Legend Upper Receiver - Burnt Bronze Burnt Bronze Cerakote Finish Chambered in 350 Legend A2 Flash Hider 20" 1:16 Twist 4150 Barrel - Black Nitride Carbine Length Gas...Sale: $349.00MSRP: $419.00 -
On Sale
Grid Defense 20" 6.5 Grendel Upper Receiver - Burnt Bronze
Sale: $329.00MSRP: $419.00Grid Defense 20" 6.5 Grendel Upper Receiver - Burnt Bronze Upper Specifications Mil-Spec Upper Design Machined from 7075-T6 Forging Mil-Spec dust cover and forward assist Made in the USA 14"...Sale: $329.00MSRP: $419.00 -
Out of stock
Grid Defense 5.5" 9mm FDE Upper Receiver with Burnt Bronze Flash Can
$409.00Grid Defense 5.5" 9mm FDE Upper Receiver with Burnt Bronze Flash Can Upper And Rail Finished in Magpul FDE Cerakote 5.5" 1:10 Twist 4150 Light HBAR Barrel - Black Nitride Made in the USA 7" Grid...$409.00 -
Out of stockOn Sale
Grid Defense 7.5" 5.56 Flash Can Upper Receiver - Gold
Sale: $339.00MSRP: $409.00Grid Defense 7.5" 5.56 Flash Can Upper Receiver - Gold Finished in Cerakote FX Gold 5.56 Upper Receiver 7075-T6 Mil-Spec Upper Receiver 7.5" 1:7 Twist 4150 M4 Barrel - Black Nitride Chambered...Sale: $339.00MSRP: $409.00 -
Out of stock
Grid Defense Stainless Steel 10.5" .300 Blackout Upper Receiver - Tungsten Gray
$399.00Grid Defense 10.5" .300 Blackout Upper Receiver Finished in Tungsten Gray Cerakote Mil-Spec 7075-T6 Upper Receiver 10.5" 1:8 Twist 416R Stainless Steel Barrel Chambered in .300 Blackout (7.62x35) A2...$399.00 -
Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver - Tactical Grape
$399.00Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver Purple Cerakote Finish Chambered in 5.56 NATO Stainless Steel A2 Flash Hider 7.5" 1:7 Twist 416R Stainless Steel Barrel - M4 Profile Pistol...$399.00 -
16" 5.56mm with 14" M-Lok Rifle Kit - Zombie Green
$599.00Ghost Firearms 16" 5.56 Rifle Kit - Zombie Green Zombie Green Cerakote Finish Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging HandleÂ$599.00 -
ALWAYS ARMED 16" 5.56 NATO BR SERIES RIFLE KIT
$529.00 - $549.00Always Armed 16" 5.56 NATO BR Series Rifle Kit 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...$529.00 - $549.00 -
ALWAYS ARMED 5" .300 BLACKOUT GEN 1 IHS UPPER RECEIVER
$209.00 - $319.00Build the ultimate ultra-compact PDW (Personal Defense Weapon) with the Always Armed 5" .300 Blackout Gen 1 IHS Upper Receiver. Designed for extreme maneuverability and maximum suppressor-ready...$209.00 - $319.00 -
On Sale
ALWAYS ARMED JESTER 16" 7.62x39 RIFLE KIT - BURNT BRONZE
Sale: $463.00MSRP: $509.00Always Armed Jester 16" 7.62x39 Rifle Kit - Burnt Bronze Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:10 Twist 4150 Barrel with Black Nitride Finish...Sale: $463.00MSRP: $509.00 -
Out of stockOn Sale
Ghost 16" .308 Winchester Billet Rifle Kit - Tungsten Gray
Sale: $599.00MSRP: $729.00Ghost 16" .308 Winchester Billet Rifle Kit - Tungsten Gray Billet DPMS Pattern High Profile Upper 16" 4150 Chrome Moly HBAR Contour Barrel Mid Length Gas System Chambered in .308...Sale: $599.00MSRP: $729.00 -
On Sale
GHOST 16" .450 BUSHMASTER RIFLE KIT - BURNT BRONZE
Sale: $449.00MSRP: $519.00GHOST 16" .450 BUSHMASTER RIFLE KIT - BURNT BRONZE Finished in Burnt Bronze Cerakote Chambered in 450 Bushmaster 16" 4150 Chrome Moly Barrel 1:24 Twist Rate 11/16x24Â TPI Thread Pitch 14" Free...Sale: $449.00MSRP: $519.00 -
Out of stockOn Sale
Ghost 18" 6mm ARC Rifle Kit - Black
Sale: $429.00MSRP: $499.00Ghost 18" 6mm ARC Rifle Kit - Black Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 18" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in 6mm...Sale: $429.00MSRP: $499.00 -
Out of stockOn Sale
Ghost 18" 6mm ARC Rifle Kit - OD Green
Sale: $449.00MSRP: $519.00Ghost 18" 6mm ARC Rifle Kit - OD Green Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 18" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in 6mm...Sale: $449.00MSRP: $519.00 -
Out of stockOn Sale
Ghost 18" 6mm ARC Rifle Kit - Tungsten Gray
Sale: $449.00MSRP: $519.00Ghost 18" 6mm ARC Rifle Kit - Tungsten Gray Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 18" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in...Sale: $449.00MSRP: $519.00 -
Out of stockOn Sale
Ghost 20" 6.5 Grendel Rifle Kit - Black
Sale: $439.00MSRP: $509.00Ghost 20" 6.5 Grendel Rifle Kit - Black Upper Specifications Mil-Spec Upper Design Machined from 7075-T6 Forging Mil-Spec dust cover and forward assist Made in the USA 14" Free Float...Sale: $439.00MSRP: $509.00 -
Out of stockOn Sale
Ghost 20" 6.5 Grendel Rifle Kit - Blue Titanium
Sale: $459.00MSRP: $529.00Ghost 20" 6.5 Grendel Rifle Kit - Blue Titanium Upper Specifications Mil-Spec Upper Design Machined from 7075-T6 Forging Mil-Spec dust cover and forward assist Made in the USA 14" Free Float...Sale: $459.00MSRP: $529.00 -
Out of stockOn Sale
Ghost 20" 6.5 Grendel Rifle Kit - FDE
Sale: $459.00MSRP: $529.00Ghost 20" 6.5 Grendel Rifle Kit - FDE Upper Specifications Mil-Spec Upper Design Machined from 7075-T6 Forging Mil-Spec dust cover and forward assist Made in the USA 14" Free Float...Sale: $459.00MSRP: $529.00