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Lower Parts

Lower Parts

Build or upgrade your rifle with quality AR-15 lower parts from Gas & Brass Armory in Brandon, FL. We offer complete lower parts kits (LPKs), individual components, upgraded triggers, buffer retainers, takedown pins, and more. Whether you’re doing a full lower build or fine-tuning your trigger and controls, we carry reliable parts from Aero Precision, CMC, Rise Armament, and other trusted brands. Everything you need to finish your lower, all in one place.

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  • B5 TRIGGER GUARD BLK

    B5 TRIGGER GUARD BLK

    B5 Systems

    MSRP: $31.35
    $19.00
    The B5 Systems Bravo trigger guard offers a drop in upgrade over the standard AR trigger guard. The enlarged profile allows for glove use in cold weather or tactical operation. The trigger guard also maintains the original swing down function for use...
    MSRP: $31.35
    $19.00
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    MSRP: $31.35
    $19.00
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  • B5 END PLATE BLK

    B5 END PLATE BLK

    B5 Systems

    MSRP: $31.35
    $19.00
    The B5 Systems Quick Disconnect End Plate provides users with an alternative attachment point for single point sling use. The limited rotation one piece steel construction allows for proper staking and a lifetime of service. The milspec manganese...
    MSRP: $31.35
    $19.00
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  • ADV TECH AR15 CASTLE NUT

    ADV TECH AR15 CASTLE NUT

    ATI Outdoors

    MSRP: $12.47
    $8.00
    High quality components and precise manufacturing make Advance Tech parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on.MANUFACTURER: ATI...
    MSRP: $12.47
    $8.00
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    MSRP: $12.47
    $8.00
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  • ADV TECH AR15 GRIP SCREW/WASHER

    ADV TECH AR15 GRIP SCREW/WASHER

    ATI Outdoors

    MSRP: $4.64
    $3.00
    This grip screw set can be used for a new build or as a replacement for that frustrating OEM flat head screw. It comes with a steel 1/4-28 x 1" Hex bolt and a steel star washer.MANUFACTURER: ATI OutdoorsMPN: A.5.10.2548MODEL: 0Description: AR Pistol Grip...
    MSRP: $4.64
    $3.00
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    MSRP: $4.64
    $3.00
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  • ADV TECH LOP QUICK STOP

    ADV TECH LOP QUICK STOP

    ATI Outdoors

    MSRP: $22.51
    $14.00
    High quality components and precise manufacturing make Advance Tech parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on.MANUFACTURER: ATI...
    MSRP: $22.51
    $14.00
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    MSRP: $22.51
    $14.00
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  • NOVESKE QUICK DETACH END PLATE BLK

    NOVESKE QUICK DETACH END PLATE BLK

    Noveske

    MSRP: $41.64
    $0.00
    Carbine Receiver End Plate with QD Sling Swivel Attachment made by Noveske.MANUFACTURER: NoveskeMPN: 05000094MODEL: Quick Detach MountDescription: Quick DetachType: MountColor: Black
    MSRP: $41.64
    $0.00
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  • WMD ACCENT BUILD KIT 556 RED

    WMD ACCENT BUILD KIT 556 RED

    WMD Guns

    MSRP: $207.90
    $0.00
    The color coated parts included are: Ejection Port Cover Door, Forward Assist, Castle Nut, Receiver End Plate, Bolt Catch, Mag Lever, Mag Button, Pivot Pin, Takedown Pin, Trigger Guard, Buffer Retainer. Also includes the pins and spring kit for the Lower...
    MSRP: $207.90
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  • WMD ACCENT BUILD KIT 556 FDE

    WMD ACCENT BUILD KIT 556 FDE

    WMD Guns

    MSRP: $207.90
    $0.00
    The color coated parts included are: Ejection Port Cover Door, Forward Assist, Castle Nut, Receiver End Plate, Bolt Catch, Mag Lever, Mag Button, Pivot Pin, Takedown Pin, Trigger Guard, Buffer Retainer. Also includes the pins and spring kit for the Lower...
    MSRP: $207.90
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  • WMD ACCENT BUILD KIT 556 NIB-X

    WMD ACCENT BUILD KIT 556 NIB-X

    WMD Guns

    MSRP: $137.34
    $0.00
    Spice up your favorite AR-15 with WMD's NiB-X coating accent parts kit. Featuring nickel boron coating to provide long life, high reliability and easy cleaning and maintenance. These parts are designed to last!MANUFACTURER: WMD GunsMPN:...
    MSRP: $137.34
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  • TPS AR-15 QUICK REPAIR KIT

    TPS AR-15 QUICK REPAIR KIT

    TPS Arms

    MSRP: $16.57
    $0.00
    High quality components and precise manufacturing make TPS Arms parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on.MANUFACTURER: TPS...
    MSRP: $16.57
    $0.00
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  • SYLVAN AR15 FLARED MAGWELL BLACK

    SYLVAN AR15 FLARED MAGWELL BLACK

    Sylvan Arms

    MSRP: $61.59
    $0.00
    The Sylvan Arms Flared Magwell allows no-look, faster loading of magazines. With integral trigger guard, and wider flare than competing products, the Sylvan Arms Flared Magwell outperforms any other magwell available on the market today.MANUFACTURER:...
    MSRP: $61.59
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  • STRIKE AR ANTI-WALK PINS BLK

    STRIKE AR ANTI-WALK PINS BLK

    Strike Industries

    MSRP: $24.67
    $0.00
    The SI Anti-Walk/Anti-Rotation Pin Set is a fantastic piece of hardware that adds an extra degree of security to prevent your trigger pins from walking out under fire or harsh use.MANUFACTURER: Strike IndustriesMPN: SI-AR-AWPMODEL: 0Description: Ultra...
    MSRP: $24.67
    $0.00
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