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AR15 Parts

AR15 Parts

Gas & Brass Armory is your trusted source for AR-15 parts in Brandon, FL. Whether you're upgrading your current rifle or building a custom AR from the ground up, we stock high-quality components from top manufacturers like Aero Precision, Magpul, Radian Weapons, BCM, Geissele, and more. Shop complete uppers, stripped lowers, triggers, handguards, buffer kits, barrels, and everything you need for your next AR build. Our expert staff is here to help you build it right the first time.

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  • Out of stock
    LANTAC PPD UPPER 300 BLACKOUT 7.5

    LANTAC PPD UPPER 300 BLACKOUT 7.5

    LanTac USA LLC

    MSRP: $1,265.59
    $1,120.00
    The LA-SF15 PDP URG (Upper Receiver Group) is built to the highest quality standards and assembled by a skilled team of armorers. Each URG undergoes a shot test at Lantac's facility and includes a lifetime warranty against defects. The LA-SF15 URG...
    MSRP: $1,265.59
    $1,120.00
    Qty in Cart: 0
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    MSRP: $1,265.59
    $1,120.00
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  • KAK BBL M16 556 MID 13.9

    KAK BBL M16 556 MID 13.9

    KAK Industry

    MSRP: $149.95
    $0.00
    KAK Industry was founded and incorporated in 2011 by Kurt Kosman to address a gap in the firearms market for quality, American-Made components at affordable, sustainable prices.MANUFACTURER: KAK IndustryMPN: 121-0212-014MODEL: ProBarrel Length: 13...
    MSRP: $149.95
    $0.00
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  • Out of stock
    GE SUPER DUTY MOD1 5.56 12.5 URG BLK

    GE SUPER DUTY MOD1 5.56 12.5 URG BLK

    Geissele Automatics

    MSRP: $1,452.28
    $1,286.00
    Manufactured with confidence and without compromise, the Super Duty MOD1 adds value to the platform while continuing the reputation for excellence. All of these technologies and advancements combine to bring to market a true next-gen upper for the AR-15...
    MSRP: $1,452.28
    $1,286.00
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    MSRP: $1,452.28
    $1,286.00
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  • FN BBL ASSEMBLY SCAR 17S 13

    FN BBL ASSEMBLY SCAR 17S 13

    FN America

    MSRP: $1,693.87
    $0.00
    The FN SCAR barrel assemblies are cold hammer-forged, chrome-lined MIL-SPEC steel barrels with front sight assembly, gas block assembly, gas regulator, gas piston and flash hider installed. Available in short lengths for reduced weight, fast handling and...
    MSRP: $1,693.87
    $0.00
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  • FN BBL ASSEMBLY SCAR 16S 10

    FN BBL ASSEMBLY SCAR 16S 10

    FN America

    MSRP: $1,467.87
    $0.00
    The FN SCAR barrel assemblies are cold hammer-forged, chrome-lined MIL-SPEC steel barrels with front sight assembly, gas block assembly, gas regulator, gas piston and flash hider installed. Available in short lengths for reduced weight, fast handling and...
    MSRP: $1,467.87
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  • Out of stock
    FAXON ARAK-21 556NATO 12.5 UPPER

    FAXON ARAK-21 556NATO 12.5 UPPER

    Faxon Firearms

    MSRP: $1,056.94
    $920.00
    The ARAK-21 is a gas piston actuated, complete upper receiver assembly designed to seamlessly interface with the standard AR-15 platform. The total extent of the interface is simply the take down pin, and the pivot pin. The new ARAK-21 upper receiver...
    MSRP: $1,056.94
    $920.00
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    MSRP: $1,056.94
    $920.00
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  • Out of stock
    FAXON DUTY BBL 556NATO 10.5 PENCIL

    FAXON DUTY BBL 556NATO 10.5 PENCIL

    Faxon Firearms

    MSRP: $212.52
    $143.00
    Manufactured in-house at Faxon, these barrels are fully stress relieved, air-gauge tested, and 11 degree target crowned to ensure superior accuracy. Quality is imbued into Faxon's barrels from the start. They start with the best materials, either...
    MSRP: $212.52
    $143.00
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    $143.00
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    DD MK18 URG UPPER 556 10.3 MK18 FDE

    DD MK18 URG UPPER 556 10.3 MK18 FDE

    Daniel Defense

    MSRP: $1,595.56
    $1,412.00
    Use what THEY use. The Daniel Defense MK18 Upper Receiver Group features the railed forend Daniel Defense currently provides to USSOCOM and a 10.3" Cold Hammer Forged Barrel. The MK18 Rail Interface System (RIS II) features the Bolt-Up System has been...
    MSRP: $1,595.56
    $1,412.00
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    MSRP: $1,595.56
    $1,412.00
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  • Out of stock
    COLT EPR UPPER KIT 5.56 11.5 BLK

    COLT EPR UPPER KIT 5.56 11.5 BLK

    Colt

    MSRP: $1,142.64
    $994.00
    High quality components and precise manufacturing makes Colt Products ideal for both new shooters and experienced gun owners. The durability, reliability and excellent build quality will provide years of service you can count on.MANUFACTURER: Colt's...
    MSRP: $1,142.64
    $994.00
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    MSRP: $1,142.64
    $994.00
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  • CMMG UPPR DSNT 5.7X28MM 6.5 CG

    CMMG UPPR DSNT 5.7X28MM 6.5 CG

    CMMG

    MSRP: $1,169.54
    $0.00
    The 5.7x28mm personal defense cartridge has found home with the purposefully designed 6.5" DISSENT upper group, all you need is a Mk4/mil-spec AR15 lower receiver or CMMG Mk57 lower receiver. All DISSENT uppers include a lower receiver 1913 picatinny...
    MSRP: $1,169.54
    $0.00
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  • Out of stock
    BLACK RAIN BBL 458SOCOM 10.5

    BLACK RAIN BBL 458SOCOM 10.5

    Black Rain Ordnance

    MSRP: $243.57
    $174.00
    High quality components and precise manufacturing makes Black Rain Ordnance ideal for both new shooters and experienced gun owners. The durability, reliability and excellent build quality will provide years of service you can count on.MANUFACTURER: Black...
    MSRP: $243.57
    $174.00
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    MSRP: $243.57
    $174.00
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  • BAD 10.5 UPPR WRKHORSE 556 AMBI GRAY

    BAD 10.5 UPPR WRKHORSE 556 AMBI GRAY

    Battle Arms Development

    MSRP: $816.48
    $0.00
    The WORKHORSE complete upper receiver is purpose-built around the forged WORKHORSE 7075-T6 aircraft-grade aluminum receiver and free-float rail handguard with M-LOK attachment point at 3, 6, and 9 o'clock positions. At 12 o'clock is a full-length...
    MSRP: $816.48
    $0.00
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    MSRP: $816.48
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