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    300 AAC Blackout

    300 AAC Blackout Upper Assemblies

    The 300 AAC Blackout, commonly called just 300 Blackout, uses the same magazines, and bolt carrier groups as the .223 / 5.56. The only difference is in the barrel and muzzle device, but gives you a much higer energy round while still using your AR-15  lower receiver.

    Our rifle uppers use both US Made and imported hand guards but all other parts are guaranteed US Made.

    Our pistol uppers use both US Made and imported hand guards, but all other parts are guaranteed US Made.

    Most importantly we use only US Made Steel Gas Blocks on any model using a low profile "micro" gas block

    First Texas Tactical upper assemblies are available in Black only at this time but we're working on a KG GunKote solution to offer many more Colors, and are made from the highest quality materials and with the exception of using imported hand guards on some models... every other part is Made in the USA!

    These uppers are not just assembled in Texas, several of the parts are made right here in Texas.

    So with the high-quality materials, meticulous workmanship & incredible pricing you can't go wrong.

    We use Anderson Manufacturing flat top Mil-Spec upper receivers with M4 feed ramps, forged and then CNC Machined from 7075-T6 Aluminum, providing you with the hardest and most durable material of any upper receiver!

    The barrels are made from 4150 Gun Quality Parkerized Chrome-Moly Steel, or 416R stainless steel and Heat Treated to RC 28-32 Hardness, and Stress Relieved! The barrels are incredibly accurate and durable.

    The gun builders at First Texas Tactical have over 40 years combined experience, led by an ex-Army Armorer. Our uppers are torqued to military specs & quality checked continuously.

    These upper assemblies are available with or without the BCG and Charging Handle and ready to drop it onto your AR-15 Lower.

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    AR-15 Left Hand Upper Assembly - 10.5in | 300 Blackout | 1:7 | 10in US Made Handguard | Ultralite | BCG

    AR-15 Left Handed Upper Assembly - 10.5in | 300 Blackout | 1:7 | 10in US Made Handguard | Ultralite | BCG

    FTT43
    300 Blackout Black Barrel AR-15 Left Handed Complete Upper With BCG & Charging Handle All USA Made parts
    $499.00 $429.00
    AR-15 Upper Assembly | 300 Blackout | 16in SS | 1:8 Twist | 12in FTT M-LOK Handguard

    AR-15 Upper Assembly | 300 Blackout | 16in SS | 1:8 Twist | 12in FTT M-LOK Handguard

    FTT59
    300 AAC Blackout AR-15 Upper Assembly in Black Anodized with a 16 inch Stainless Steel barrel. INCLUDES BCG and Charging Handle
    $399.00 $329.00
    AR-15 Upper Assembly | 300 Blackout | 16in SS | 1:8 Twist | 12in FTT M-LOK Handguard | NO BCG

    AR-15 Upper Assembly | 300 Blackout | 16in SS | 1:8 Twist | 12in FTT M-LOK Handguard | NO BCG

    FTT60
    300 AAC Blackout AR-15 Upper Assembly in Black Anodized with a 16 inch Stainless Steel barrel. NO BCG or Charging Handle
    $297.00 $249.00
    AR-15 Upper Assembly 300 Blackout | 16in SS 1:8 | 12in US Made Airlite Key Mod AR-15 Handguard

    AR-15 Upper Assembly 300 Blackout | 16in SS 1:8 | 12in US Made Airlite Key Mod AR-15 Handguard

    FTT61
    3.7lb 300 AAC Blackout AR-15 Upper Assembly in Black Anodized with a 16 inch Stainless Steel barrel. INCLUDES Low Mass BCG and Charging Handle All US Made Components
    $409.00 $371.00
    AR-15 Upper Assembly 300 Blackout | 16in SS 1:8 | 12in US Made Airlite Key Mod AR-15 Handguard | NO BCG

    AR-15 Upper Assembly 300 Blackout | 16in SS 1:8 | 12in US Made Airlite Key Mod AR-15 Handguard | NO BCG

    FTT62
    300 AAC Blackout AR-15 Upper Assembly in Black Anodized with a 16 inch Stainless Steel barrel. All US Made Components. BCG and Charging Handle ARE NOT INCLUDED
    $339.00 $281.00