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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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  • CALDWELL AR FIELD REPAIR KIT

    CALDWELL AR FIELD REPAIR KIT

    Caldwell

    MSRP: $17.42
    $11.00
    This kit includes replacement detents and springs for the AR-15 that are most commonly damaged or lost.MANUFACTURER: CaldwellMPN: 1078425MODEL: 0Type: Kit
    MSRP: $17.42
    $11.00
    Qty in Cart: 0
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    MSRP: $17.42
    $11.00
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  • BCM GUNFIGHTER TRGGR GUARD MOD 0 FDE

    BCM GUNFIGHTER TRGGR GUARD MOD 0 FDE

    Bravo Company

    MSRP: $11.47
    $7.00
    BCM GUNFIGHTER Trigger Guard for your AR15, M16, M4 style rifle.MANUFACTURER: Bravo CompanyMPN: BCM-GTG-MOD-0-FDEMODEL: Mod 0Type: Trigger GuardColor: Flat Dark Earth
    MSRP: $11.47
    $7.00
    Qty in Cart: 0
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    MSRP: $11.47
    $7.00
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  • BCM GUNFIGHTER TRGGR GUARD MOD 0 BLK

    BCM GUNFIGHTER TRGGR GUARD MOD 0 BLK

    Bravo Company

    MSRP: $11.47
    $7.00
    BCM GUNFIGHTER Trigger Guard for your AR15, M16, M4 style rifle.MANUFACTURER: Bravo CompanyMPN: BCM-GTG-MOD-0-BLKMODEL: Mod 0Type: Trigger GuardColor: Black
    MSRP: $11.47
    $7.00
    Qty in Cart: 0
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    MSRP: $11.47
    $7.00
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  • B5 TRIGGER GUARD COMPOSITE FDE

    B5 TRIGGER GUARD COMPOSITE FDE

    B5 Systems

    MSRP: $11.76
    $8.00
    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. Proudly made in the USA.MANUFACTURER: B5 SystemsMPN: PTG-1128MODEL: 0Type:...
    MSRP: $11.76
    $8.00
    Qty in Cart: 0
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    MSRP: $11.76
    $8.00
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  • B5 TRIGGER GUARD COMPOSITE BLK

    B5 TRIGGER GUARD COMPOSITE BLK

    B5 Systems

    MSRP: $11.76
    $8.00
    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. Proudly made in the USA.MANUFACTURER: B5 SystemsMPN: PTG-1127MODEL: 0Type:...
    MSRP: $11.76
    $8.00
    Qty in Cart: 0
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    MSRP: $11.76
    $8.00
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  • B5 TRIGGER GUARD FDE

    B5 TRIGGER GUARD FDE

    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
    Qty in Cart: 0
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    MSRP: $31.35
    $19.00
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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
    Qty in Cart: 0
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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
    Qty in Cart: 0
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    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
    Qty in Cart: 0
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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
    Qty in Cart: 0
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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
    Qty in Cart: 0
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    MSRP: $22.51
    $14.00
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  • Out of stock
    LUTH AR .750 ADJUSTABLE GAS BLOCK

    LUTH AR .750 ADJUSTABLE GAS BLOCK

    Luth-AR

    MSRP: $31.42
    $20.00
    Designed to fit barrels with a .750 diameter, this high-quality piece helps to improve the performance of your firearm. It's made from durable materials and easy to install, making it a must-have for any AR owner. Plus, its low-profile design won't add...
    MSRP: $31.42
    $20.00
    Qty in Cart: 0
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    MSRP: $31.42
    $20.00
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