Order 300 Blackout Complete Upper | Ghost Uppers - Grid Defense

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  • AR15 - 300 Blackout
  • 300 Blackout Uppers

300 Blackout Uppers

Our custom-built 300 Blackout uppers and accessories are designed to deliver superior performance and reliability. Our selection of 300 Blackout upper receivers and barrel assemblies are crafted from top-quality materials and built to the highest standards to ensure that you can build the ultimate firearm. Clear All Sort By: Featured Items Newest Items Best Selling A to Z Z to A By Review Price: Ascending Price: Descending Products Per Page: 8 12 16 20 40 100 Columns: 1 2 3 4 6
  • On Sale Ghost Firearms 16" .300 Blackout AR15 Upper Receiver - Black Anodized Ghost Firearms 16" .300 Blackout AR15 Upper Receiver - Black Anodized
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    Ghost Firearms Elite 16" Upper .300 Blackout - Black

    MSRP: Sale: $249.00 MSRP: $319.00 Ghost Firearms 16" .300 Blackout Upper Receiver - Black Black Anodized Finish Milspec 7075-T6 Upper Receiver 16" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Pistol Length Gas System A2 Muzzle Device .750 Low Profile Gas Block 14" Free... MSRP: Sale: $249.00 MSRP: $319.00 Choose Options Quick view
  • On Sale Ghost Vital 7.5" Upper .300 Blackout Black Anodized AR15 Pistol Upper Receiver chambered in .300 AAC by Ghost Firearms
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    Ghost Vital 7.5" .300 Blackout Upper Receiver - Black

    MSRP: Sale: $239.00 MSRP: $299.00 Ghost Vital 7.5" .300 Blackout Upper Receiver - Black Chambered in .300 Blackout (7.62x35) A2 Birdcage Flash Hider 7.5" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System 5/8 by 24 Thread Ghost Firearms... MSRP: Sale: $239.00 MSRP: $299.00 Choose Options Quick view
  • On Sale Ghost Firearms 10.5" .300 AR15 Upper Reciever - Black Anodized
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    Ghost Vital 10.5" Upper .300 Blackout

    MSRP: Sale: $239.00 MSRP: $299.00 Ghost Vital 10.5".300 Upper Chambered in .300 Blackout (7.62x35) A2 Birdcage Flash Hider 10.5" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 9" M-Lok Free Float Hand... MSRP: Sale: $239.00 MSRP: $299.00 Choose Options Quick view
  • On Sale Always Armed 10.5" 300 Blackout Upper Receiver - Black Milspec AR-15 10.5" Always Armed Upper with 1:8 Twist
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    ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER - BLACK ANODIZED

    MSRP: Sale: $189.00 MSRP: $279.00 Always Armed 10.5" 300 Blackout Upper Receiver - Black Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas... MSRP: Sale: $189.00 MSRP: $279.00 Choose Options Quick view
  • On Sale ALWAYS ARMED 16" 300 BLACKOUT Milspec AR15 Rifle Upper Receiver - Black Anodized
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    ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - BLACK

    MSRP: Sale: $199.00 MSRP: $269.00 Always Armed 16" 300 Blackout Upper Receiver - Black Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas System ... MSRP: Sale: $199.00 MSRP: $269.00 Choose Options Quick view
  • On Sale 16" .300 Blackout Upper Receiver cerakoted in Flat Dark Earth by Ghost Firearms Flat Dark Earth 16" .300 Blackout Upper Receiver by Ghost Firearms
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    Ghost Elite 16" Upper .300 Blackout - FDE

    MSRP: Sale: $269.00 MSRP: $349.00 Ghost Firearms Elite 16" Upper .300 Blackout - FDE Chambered in .300 Blackout (7.62x35) A2 Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 14" M-Lok Free... MSRP: Sale: $269.00 MSRP: $349.00 Choose Options Quick view
  • On Sale Ghost Firearms 10.5" .300 Blackout AR15 Upper Receiver Cerakoted in Flat Dark Earth GHOST FIREARMS ELITE 10.5" UPPER RECEIVER - .300 BLACKOUT UPPER - FDE
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    GHOST FIREARMS ELITE 10.5" UPPER RECEIVER - .300 BLACKOUT UPPER - FDE

    MSRP: Sale: $259.00 MSRP: $329.00 Ghost Firearms Elite 10.5" .300 - Flat Dark Earth Flat Dark Earth Cerakote Finished Chambered in .300 Blackout (7.62x35) A2 Flash Hider 10.5" 1:8 Twist 4150 Light HBar Barrel Black Nitride 5/8x24 Thread Pitch Pistol Length Gas... MSRP: Sale: $259.00 MSRP: $329.00 Choose Options Quick view
  • On Sale ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - MAGPUL FDE Flat Dark Earth Cerakoted Mil-Spec AR 15 Upper Receiver
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    ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - MAGPUL FDE

    MSRP: Sale: $219.00 MSRP: $319.00 Always Armed 16" 300 Blackout Upper Receiver - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas System .750 Low... MSRP: Sale: $219.00 MSRP: $319.00 Choose Options Quick view
  • On Sale Magpul Flat Dark Earth AR-15 Pistol Upper Receiver Chambered in .300 Blackout (7.62x35) Grid Defense 10.5" Flash Can Upper with 12" MLOK Rail in FDE Cerakote
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    Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver - FDE

    MSRP: Sale: $329.00 MSRP: $399.00 GRID DEFENSE 10.5" .300 BLACKOUT UPPER RECEIVER WITH FLASH CAN - FDE Finished in Magpul Flat Dark Earth Cerakote Made in the USA 7075-T6 Mil-Spec Upper Receiver 10.5" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Chambered in .300 Blackout (7... MSRP: Sale: $329.00 MSRP: $399.00 Choose Options Quick view
  • On Sale .300 Blackout AR 15 Pistol Upper. Milspec .300 Blackout Upper Receiver with 12" M-Lok Rail and Dimpled Flash Can
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    Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver - Black

    MSRP: Sale: $329.00 MSRP: $399.00 Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver Hard Coat Black Anodized Finish Made in the USA 7075-T6 Mil-Spec Upper Receiver 10.5" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Chambered in .300 Blackout Pistol Length Gas System ... MSRP: Sale: $329.00 MSRP: $399.00 Choose Options Quick view
  • On Sale Milspec AR15 Pistol Upper Receiver finished in Magpul FDE Grid Defense AR 15 .300 Blackout Flash Can Upper Receiver
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    Grid Defense 7.5" .300 Blackout Flash Can Upper Receiver - FDE

    MSRP: Sale: $329.00 MSRP: $399.00 Grid Defense 7.5" .300 Blackout Pistol Upper Receiver - Flat Dark Earth Chambered in .300 Blackout 7.5" 1:8 Twist 4150 Light HBar Barrel - Black Nitride 7075-T6 Milspec Upper Receiver Pistol Length Gas System .750 Low Profile Gas Block Dimpled... MSRP: Sale: $329.00 MSRP: $399.00 Choose Options Quick view
  • On Sale OD Green 16" .300 Blackout Upper Receiver by Ghost Firearms Mil spec 16" .300 Blackout Upper Receiver by Ghost Firearms in OD Green
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    Ghost Firearms Elite 16" Upper .300 AAC Blackout - OD Green

    MSRP: Sale: $269.00 MSRP: $349.00 Ghost Firearms Elite 16" .300 AAC Upper - OD Green 300 BLACKOUT UPPER Chambered in .300 Blackout (7.62x35) A2 Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 14"... MSRP: Sale: $269.00 MSRP: $349.00 Choose Options Quick view
  • On Sale Always Armed Magpul Flat Dark Earth 10.5" 300 Blackout Upper Receiver 10.5" Pistol Upper Receiver Chambered in .300 AAC - FDE Cerakote Finish
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    ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER - MAGPUL FDE

    MSRP: Sale: $209.00 MSRP: $299.00 Always Armed 10.5" 300 Blackout Upper Receiver - Magpul FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas... MSRP: Sale: $209.00 MSRP: $299.00 Choose Options Quick view
  • On Sale Flash Can Upper Receiver Mil-spec AR 15 Pistol Upper Chambered in .300 Blackout
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    7.5" .300 Blackout Flash Can Upper Receiver With 10" MLOK Hand Guard

    MSRP: Sale: $199.00 MSRP: $299.00 7.5" .300 Blackout Flash Can Upper Receiver With 10" MLOK Hand Guard Made in the USA Mil Spec 7075 T6 Upper Receiver 7.5" 4150 Steel Barrel with Black Nitride Finish Chambered in .300 Blackout 1:8 Twist Rate 10" Free Floating MLOK Hand... MSRP: Sale: $199.00 MSRP: $299.00 Choose Options Quick view
  • On Sale 10.5" .300 Blackout AR15 Upper Receiver in Burnt Bronze Cerakote by Ghost Firearms .300 BLACKOUT GHOST FIREARMS UPPER RECEIVER BURNT BRONZE
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    Ghost Firearms Elite 10.5" Upper .300 Blackout - Burnt Bronze

    MSRP: Sale: $259.00 MSRP: $329.00 Ghost Firearms Elite 10.5" .300 - Burnt Bronze Burnt Bronze Cerakote Finished Chambered in .300 Blackout (7.62x35) A2 Flash Hider 10.5" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 9"... MSRP: Sale: $259.00 MSRP: $329.00 Choose Options Quick view
  • On Sale 10.5" .300 Blackout Upper Receiver with 10" MLOK Hand Guard AR-15 Upper Receiver
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    Always Armed TR Series 10.5" .300 Blackout Upper Receiver - Black

    MSRP: Sale: $189.00 MSRP: $289.00 10.5" .300 Blackout Upper Receiver with 10" M-LOK Hand Guard Made in the USA 10.5" 4150 Barrel Chambered in .300 Blackout 1:8 Twist 10" Free Floating Mlok Hand Guard Black Anodized Finish Pistol Length Gas System 5/8x24 Thread Pattern A2 Muzzle... MSRP: Sale: $189.00 MSRP: $289.00 Choose Options Quick view
  • On Sale Ghost Firearms 10.5" .300 AR15 Upper Receiver in OD Green Cerakote OD Green Milspec 10.5" .300 NATO Upper Receiver by Ghost Firearms
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    Ghost Fireams Elite 10.5" Upper .300 Blackout - OD Green

    MSRP: Sale: $259.00 MSRP: $329.00 Ghost Firearms Elite 10.5".300 - OD Green OD Green Cerakote Finished Chambered in .300 Blackout (7.62x35) A2 Flash Hider 10.5" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 9"... MSRP: Sale: $259.00 MSRP: $329.00 Choose Options Quick view
  • On Sale Ghost Firearms Elite 16" Upper .300 AAC Blackout - Blue Titanium buy this best priced .300 upper receiver
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    Ghost Firearms Elite 16" Upper .300 AAC Blackout - Blue Titanium

    MSRP: Sale: $269.00 MSRP: $349.00 Ghost Firearms Elite 16".300 AAC Upper - Blue Titanium GHOST FIREARMS ELITE 16" UPPER - .300 AAC BLACKOUT UPPER - BLUE TITANIUM Chambered in .300 Blackout (7.62x35) A2 Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel Black Nitride... MSRP: Sale: $269.00 MSRP: $349.00 Choose Options Quick view
  • On Sale Milspec 7.5" .300 AAC Upper Receiver - Black Anodized Pistol Upper Receiver
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    Grid Defense 7.5" .300 Blackout Flash Can Upper Receiver - Black Anodized

    MSRP: Sale: $329.00 MSRP: $399.00 Grid Defense 7.5" .300 Blackout Flash Can Upper - Black Made in the USA Pistol Length Gas System Dimpled Flash Can 9" Grid Defense Octagon M-Lok Rail Chambered in .300 Blackout (7.62x35) 1:8 Twist 4150 Light HBar Barrel - Black Nitride Mil-Spec 7075-T6... MSRP: Sale: $329.00 MSRP: $399.00 Choose Options Quick view
  • On Sale Milspec AR-15 OD Green Upper Receiver Chambered in .300 Blackout Grid Defense Pistol Upper with 10.5" 1:8 Barrel, 12" M-Lok Rail and Dimpled Flash Can - Magpul Olive Drab Green
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    Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver - OD Green

    MSRP: Sale: $329.00 MSRP: $399.00 GRID DEFENSE 10.5" UPPER - .300 BLACKOUT UPPER RECEIVER WITH FLASH CAN - OD GREEN Finished in Magpul Olive Drab Green Cerakote Made in the USA 7075-T6 Mil-Spec Upper Receiver 10.5" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Chambered in .300... MSRP: Sale: $329.00 MSRP: $399.00 Choose Options Quick view
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Tag » Colt M4 300 Blackout Upper