AR-15 | AR-10

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.

  • Out of stock
    On Sale
    Grid Defense 9" .22LR Flash Can Upper Receiver - FDE Shop this Flat Dark Earth Upper Receiver with a fluted muzzle device for your next .22lr build
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    Grid Defense 9" .22LR Flash Can Upper Receiver - FDE

    Sale: $329.00
    MSRP: $399.00
    Grid Defense 9" .22LR Flash Can Upper Receiver - FDE Milspec 7075-T6 Upper Receiver 9" 4150 Black Nitride Barrel Pencil Lightweight Profile Barrel 1:16 Twist Rate 1/2x28 Thread Pattern 9" Grid Defense Octagon M-Lok Rail Flat Dark Earth Cerakote Fluted...
    Sale: $329.00
    MSRP: $399.00
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  • Out of stock
    On Sale
    Grid Defense 9" .22LR Upper Receiver - OD Green Buy this OD Green upper receiver to blend in on your next hunt in the forest
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    Grid Defense 9" .22LR Upper Receiver - OD Green

    Sale: $299.00
    MSRP: $379.00
    Grid Defense 9" .22LR Upper Receiver - OD Green Milspec 7075-T6 Upper Receiver 9" 4150 Black Nitride Barrel Pencil Lightweight Profile Barrel 1:16 Twist Rate 1/2x28 Thread Pattern 7" Grid Defense Octagon M-Lok Rail Finished in OD Green...
    Sale: $299.00
    MSRP: $379.00
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  • Out of stock
    On Sale
    Grid Defense 9" .22LR Upper Receiver - Black 1:16 twist rate pencil profile barrel | Compatible with CMMG Components
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    Grid Defense 9" .22LR Upper Receiver - Black

    Sale: $299.00
    MSRP: $379.00
    Grid Defense 9" .22LR Upper Receiver - Black Milspec 7075-T6 Upper Receiver 9" 4150 Black Nitride Barrel Pencil Lightweight Profile Barrel 1:16 Twist Rate 1/2x28 Thread Pattern 7" Grid Defense Octagon M-Lok Rail Hard Coat Black Anodize A2...
    Sale: $299.00
    MSRP: $379.00
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  • Out of stock
    On Sale
    Grid Defense 9" .22LR Upper Receiver - FDE Get this upper receiver in tan cerakote for your next AR-22 build
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    Grid Defense 9" .22LR Upper Receiver - FDE

    Sale: $299.00
    MSRP: $379.00
    Grid Defense 9" .22LR Upper Receiver - FDE Milspec 7075-T6 Upper Receiver 9" 4150 Black Nitride Barrel Pencil Lightweight Profile Barrel 1:16 Twist Rate 1/2x28 Thread Pattern 7" Grid Defense Octagon M-Lok Rail Finished in Flat Dark Earth...
    Sale: $299.00
    MSRP: $379.00
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  • Out of stock
    On Sale
    Ghost 9" .22LR Pistol Kit - Black
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    Ghost 9" .22LR Pistol Kit - Black

    Sale: $460.00
    MSRP: $579.00
    Ghost 9" .22LR Pistol Kit - Black Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  9" 4150 Black Nitride Barrel Lightweight Pencil Profile Barrel 1:16 Twist Rate 1/2x28 TPI Thread Pitch Chambered in .22...
    Sale: $460.00
    MSRP: $579.00
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  • Out of stock
    On Sale
    Ghost 9" .22LR Pistol Kit - Blue Titanium
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    Ghost 9" .22LR Pistol Kit - Blue Titanium

    Sale: $480.00
    MSRP: $599.00
    Ghost 9" .22LR Pistol Kit - Blue Titanium Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  9" 4150 Black Nitride Barrel Lightweight Pencil Profile Barrel 1:16 Twist Rate 1/2x28 TPI Thread Pitch Chambered...
    Sale: $480.00
    MSRP: $599.00
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  • Out of stock
    On Sale
    Grid Defense 9" .22LR Upper Receiver - Blue Titanium Buy this upper receiver for your next range day. chambered in .22lr it is cheap to shoot
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    Grid Defense 9" .22LR Upper Receiver - Blue Titanium

    Sale: $299.00
    MSRP: $379.00
    Grid Defense 9" .22LR Upper Receiver - Blue Titanium Milspec 7075-T6 Upper Receiver 9" 4150 Black Nitride Barrel Pencil Lightweight Profile Barrel 1:16 Twist Rate 1/2x28 Thread Pattern 7" Grid Defense Octagon M-Lok Rail Finished in Blue Titanium...
    Sale: $299.00
    MSRP: $379.00
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  • Out of stock
    On Sale
    Grid Defense 9" .22LR Upper Receiver - Burnt Bronze Shop this upper receiver for your next fun gun. chambered in 22lr it's cheap and easy to shoot
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    Grid Defense 9" .22LR Upper Receiver - Burnt Bronze

    Sale: $299.00
    MSRP: $379.00
    Grid Defense 9" .22LR Upper Receiver - Burnt Bronze Milspec 7075-T6 Upper Receiver 9" 4150 Black Nitride Barrel Pencil Lightweight Profile Barrel 1:16 Twist Rate 1/2x28 Thread Pattern 7" Grid Defense Octagon M-Lok Rail Finished in Burnt Bronze Cerakote...
    Sale: $299.00
    MSRP: $379.00
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  • Out of stock
    On Sale
    Grid Defense 9" .22LR Upper Receiver - Tungsten Gray Shop this upper receiver from Grid Defense for your next .22lr plinking rifle
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    Grid Defense 9" .22LR Upper Receiver - Tungsten Gray

    Sale: $299.00
    MSRP: $379.00
    Grid Defense 9" .22LR Upper Receiver - Tungsten Gray Milspec 7075-T6 Upper Receiver 9" 4150 Black Nitride Barrel Pencil Lightweight Profile Barrel 1:16 Twist Rate 1/2x28 Thread Pattern 7" Grid Defense Octagon M-Lok Rail Finished in Tungsten Gray...
    Sale: $299.00
    MSRP: $379.00
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  • Out of stock
    On Sale
    Ghost 9" .22LR Pistol Kit - FDE
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    Ghost 9" .22LR Pistol Kit - FDE

    Sale: $480.00
    MSRP: $599.00
    Ghost 9" .22LR Pistol Kit - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  9" 4150 Black Nitride Barrel Lightweight Pencil Profile Barrel 1:16 Twist Rate 1/2x28 TPI Thread Pitch Chambered in .22 Long...
    Sale: $480.00
    MSRP: $599.00
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  • Out of stock
    On Sale
    Ghost 9" .22LR Pistol Kit - OD Green
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    Ghost 9" .22LR Pistol Kit - OD Green

    Sale: $480.00
    MSRP: $599.00
    Ghost 9" .22LR Pistol Kit - OD Green Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  9" 4150 Black Nitride Barrel Lightweight Pencil Profile Barrel 1:16 Twist Rate 1/2x28 TPI Thread Pitch Chambered in .22...
    Sale: $480.00
    MSRP: $599.00
    Out of stock Quick view
  • Out of stock
    On Sale
    Ghost 9" .22LR Pistol Kit - Tungsten Gray
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    Ghost 9" .22LR Pistol Kit - Tungsten Gray

    Sale: $480.00
    MSRP: $599.00
    Ghost 9" .22LR Pistol Kit - Tungsten Gray Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  9" 4150 Black Nitride Barrel Lightweight Pencil Profile Barrel 1:16 Twist Rate 1/2x28 TPI Thread Pitch Chambered...
    Sale: $480.00
    MSRP: $599.00
    Out of stock Quick view
  • Out of stock
    On Sale
    Ghost 9" .22LR Pistol Kit - Burnt Bronze
    Quick view

    Ghost 9" .22LR Pistol Kit - Burnt Bronze

    Sale: $480.00
    MSRP: $599.00
    Ghost 9" .22LR Pistol Kit - Burnt Bronze Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  9" 4150 Black Nitride Barrel Lightweight Pencil Profile Barrel 1:16 Twist Rate 1/2x28 TPI Thread Pitch Chambered in...
    Sale: $480.00
    MSRP: $599.00
    Out of stock Quick view