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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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  • GEISSELE SPR 42 BRD WIRE BFR/SPR H2

    GEISSELE SPR 42 BRD WIRE BFR/SPR H2

    Geissele Automatics

    MSRP: $127.09
    $91.00
    The Geissele Super 42 Buffer Spring/Buffer Combo was designed to improve the function and reliability of your AR-15 pattern rifle. Its unique spring design uses three independent strands of wire. This concept acts as a harmonic damper and energy absorber...
    MSRP: $127.09
    $91.00
    Qty in Cart: 0
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    MSRP: $127.09
    $91.00
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  • CMMG RECEIVER EXT KIT CARBINE AR15

    CMMG RECEIVER EXT KIT CARBINE AR15

    CMMG

    MSRP: $77.06
    $54.00
    When you are thinking about building a new AR-15 rifle or completing that lower you have had sitting around this CMMG AR-15 Carbine Receiver Extension Kit 6-position Mil-Spec is the perfect one. This kit contains an AR-15 carbine receiver extension, end...
    MSRP: $77.06
    $54.00
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    MSRP: $77.06
    $54.00
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  • CMMG BUFFER ASSEMBLY CARB MK3

    CMMG BUFFER ASSEMBLY CARB MK3

    CMMG

    MSRP: $53.12
    $38.00
    CMMG'S 308 AR Carbine Buffer Assembly can be used in conjunction with the CMMG 308 carbine buffer spring in AR-15 buffer tubes. Compatible with LR-308 Mk3 and AR-10's. All CMMG parts are made in the United States from the best materials available. CMMG...
    MSRP: $53.12
    $38.00
    Qty in Cart: 0
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    MSRP: $53.12
    $38.00
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  • CMMG BUFFER ASSEMBLY CARB MK9

    CMMG BUFFER ASSEMBLY CARB MK9

    CMMG

    MSRP: $33.29
    $27.00
    The CMMG MK9 AR-15 9mm Carbine Buffer is a replacement buffer for AR-15's/M4's that are chambered in 9mm luger using a carbine receiver extension.MANUFACTURER: CMMGMPN: 90CA9B4MODEL: 0Fit: AR RiflesType: BufferColor: Black
    MSRP: $33.29
    $27.00
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    MSRP: $33.29
    $27.00
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  • CMMG AR-15 BUFFER ASSEMBLY

    CMMG AR-15 BUFFER ASSEMBLY

    CMMG

    MSRP: $28.32
    $21.00
    CMMG manufactures high quality parts and accessories for the AR-15 platform. This CMMG AR-15 Buffer Assembly is a replacement buffer for AR-15's/M4's that are using a carbine receiver extension.MANUFACTURER: CMMGMPN: 55CA977MODEL: 0Description: Buffer is...
    MSRP: $28.32
    $21.00
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    MSRP: $28.32
    $21.00
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  • CMC AR15 STANDARD BUFFER ASSEMBLY ML

    CMC AR15 STANDARD BUFFER ASSEMBLY ML

    CMC Triggers

    MSRP: $79.80
    $57.00
    Compatible with Mil-Spec AR-15 stocks this kit contains all the necessary parts to mount a stock assembly onto your lower receiver. Six position AR-15 buffer tube is machined from 7075 T6 aluminum to Mil-Spec dimensions with a Type III Class II hard coat...
    MSRP: $79.80
    $57.00
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    MSRP: $79.80
    $57.00
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  • CMC AR15 8-POS BUFFER KIT A5 LNGTH

    CMC AR15 8-POS BUFFER KIT A5 LNGTH

    CMC Triggers

    MSRP: $138.60
    $99.00
    CMC Triggers in-house production also allows for greater flexibility and the ability to respond quickly to market demands. This, in turn, benefits their customers, who can depend on a reliable and consistent supply of high-quality Buffer Tube Kits. The...
    MSRP: $138.60
    $99.00
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    MSRP: $138.60
    $99.00
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  • BCM STOCK HARDWARE MOUNT KIT MILSPEC

    BCM STOCK HARDWARE MOUNT KIT MILSPEC

    Bravo Company

    MSRP: $81.13
    $58.00
    Bravo Company's BCM Mil-Spec Carbine Stock Hardware Mounting Kit for AR-15's contains all the necessary parts to mount your Mil-Spec dimension stock assembly to your lower receiver- Receiver Extension (Mil-Spec, 6 position), Receiver End Plate, Castle...
    MSRP: $81.13
    $58.00
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    MSRP: $81.13
    $58.00
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  • BCM MK2 RECEIVER EXTENSION

    BCM MK2 RECEIVER EXTENSION

    Bravo Company

    MSRP: $69.93
    $50.00
    BCM MK2 Receiver Extension for your AR15, M16, M4. Machined from 7075T6 and manufactured to Mil-Spec dimensions and specifications. Mil-Spec receiver extensions have a slightly smaller dimension where the stock slides on. *NOTE* These buffer tubes...
    MSRP: $69.93
    $50.00
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    MSRP: $69.93
    $50.00
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  • BCM MK2 RECOIL MITIGATION MOD1 T2

    BCM MK2 RECOIL MITIGATION MOD1 T2

    Bravo Company

    MSRP: $173.53
    $124.00
    Whether starting a new rifle build or upgrading an existing one the BCM MK2 recoil mitigation system offers less felt recoil while maintaining and improving reliability. Comes as a complete kit ready to mount on any AR pattern rifle.MANUFACTURER: Bravo...
    MSRP: $173.53
    $124.00
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    MSRP: $173.53
    $124.00
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  • BCM MK2 RECOIL MITIGATION MOD1 T1

    BCM MK2 RECOIL MITIGATION MOD1 T1

    Bravo Company

    MSRP: $163.73
    $117.00
    Whether starting a new rifle build or upgrading an existing one the BCM MK2 recoil mitigation system offers less felt recoil while maintaining and improving reliability. Comes as a complete kit ready to mount on any AR pattern rifle.MANUFACTURER: Bravo...
    MSRP: $163.73
    $117.00
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    MSRP: $163.73
    $117.00
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  • BCM MK2 RECOIL MITIGATION MOD1 T0

    BCM MK2 RECOIL MITIGATION MOD1 T0

    Bravo Company

    MSRP: $153.93
    $110.00
    Whether starting a new rifle build or upgrading an existing one the BCM MK2 recoil mitigation system offers less felt recoil while maintaining and improving reliability. Comes as a complete kit ready to mount on any AR pattern rifle.MANUFACTURER: Bravo...
    MSRP: $153.93
    $110.00
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    MSRP: $153.93
    $110.00
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