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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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  • DD LPK 556 BLK

    DD LPK 556 BLK

    Daniel Defense

    MSRP: $165.20
    $118.00
    Lower receiver parts kit for the AR-15.MANUFACTURER: Daniel DefenseMPN: 05-013-21007MODEL: 0Description: Lower Receiver Parts KitFit: AR-15Caliber: 556NATOType: Lower Parts KitColor: Black
    MSRP: $165.20
    $118.00
    Qty in Cart: 0
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    MSRP: $165.20
    $118.00
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  • COLT LOWER RECEIVER PARTS KIT AR15

    COLT LOWER RECEIVER PARTS KIT AR15

    Colt's Manufacturing

    MSRP: $152.95
    $109.25
    Convenient kit of genuine Colt factory parts includes all the small parts needed to finish a small-pin AR-15 lower receiver, and install the trigger group and pistol grip of your choice. Or, use the kit to rebuild the worn internals of an old rifle and...
    MSRP: $152.95
    $109.25
    Qty in Cart: 0
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    MSRP: $152.95
    $109.25
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  • CMMG AMBI SAFETY SELECTOR AR15

    CMMG AMBI SAFETY SELECTOR AR15

    CMMG

    MSRP: $34.02
    $27.58
    Replaces your standard safety selector to accommodate left and right handed shooters. All parts meet or exceed mil-spec.MANUFACTURER: CMMGMPN: 55CA6D9MODEL: 0Description: Ambidextrous Safety Selector KitType: Safety Selector
    MSRP: $34.02
    $27.58
    Qty in Cart: 0
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    MSRP: $34.02
    $27.58
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  • CMMG LOW PRO GAS BLOCK .750 ID

    CMMG LOW PRO GAS BLOCK .750 ID

    CMMG

    MSRP: $43.43
    $31.02
    .750" Low profile gas block. Includes installation screws.MANUFACTURER: CMMGMPN: 55DA38DMODEL: ARDescription: .750"Type: Gas BlockColor: Black
    MSRP: $43.43
    $31.02
    Qty in Cart: 0
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    MSRP: $43.43
    $31.02
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  • CMMG LPK 308 BLK

    CMMG LPK 308 BLK

    CMMG

    MSRP: $95.41
    $68.84
    All the parts you need to get started on your next Mk3 build. Combine this kit with a buttstock kit to complete your lower group. Compatible with CMMG Mk3 Lowers and most LR308 type lowers.MANUFACTURER: CMMGMPN: 38CA6DCMODEL: 308Description: Lower...
    MSRP: $95.41
    $68.84
    Qty in Cart: 0
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    MSRP: $95.41
    $68.84
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  • CMMG LPK 556 BLK

    CMMG LPK 556 BLK

    CMMG

    MSRP: $81.07
    $57.91
    All the parts you need to get started on your next AR15 build. Combine this kit with a buttstock kit to complete your lower group.MANUFACTURER: CMMGMPN: 55CA6C5MODEL: 556Description: Lower Receiver Parts KitType: Lower Parts KitColor: Black
    MSRP: $81.07
    $57.91
    Qty in Cart: 0
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    MSRP: $81.07
    $57.91
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  • CMMG PARTS KIT AR15 MAGAZINE CATCH

    CMMG PARTS KIT AR15 MAGAZINE CATCH

    CMMG

    MSRP: $18.78
    $11.38
    High quality components and precise manufacturing make CMMG 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: CMMGMPN:...
    MSRP: $18.78
    $11.38
    Qty in Cart: 0
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    MSRP: $18.78
    $11.38
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  • CMMG PARTS KIT AR15 BOLT CATCH

    CMMG PARTS KIT AR15 BOLT CATCH

    CMMG

    MSRP: $17.33
    $10.50
    High quality components and precise manufacturing make CMMG 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: CMMGMPN:...
    MSRP: $17.33
    $10.50
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    MSRP: $17.33
    $10.50
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  • CMMG AR15 END PLATE AMBI SLING POINT

    CMMG AR15 END PLATE AMBI SLING POINT

    CMMG

    MSRP: $12.08
    $7.32
    Since 2002 CMMG has been the leading manufacturer of AR-15 rifles, AR-10 rifles, and trailblazing AR technologies. CMMG offers premium AR-15 and AR-10 rifles, parts, and accessories.MANUFACTURER: CMMGMPN: 55CA9ACMODEL: Receiver End PlateColor: Black
    MSRP: $12.08
    $7.32
    Qty in Cart: 0
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    MSRP: $12.08
    $7.32
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  • CMMG MIL-SPEC TRIGGER KIT AR15

    CMMG MIL-SPEC TRIGGER KIT AR15

    CMMG

    MSRP: $43.97
    $29.59
    High quality components and precise manufacturing make CMMG 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: CMMGMPN:...
    MSRP: $43.97
    $29.59
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    MSRP: $43.97
    $29.59
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  • CMMG MK3 308 TAKEDOWN AND PIVOT PINS

    CMMG MK3 308 TAKEDOWN AND PIVOT PINS

    CMMG

    MSRP: $34.24
    $24.46
    These improved pins are slightly longer to make take down much faster and easier. The ends have a divot to allow the use of a bullet tip without the fear of slipping. Used on the Mk3 platform that is based on the LR308 patterned .308 rifle.MANUFACTURER:...
    MSRP: $34.24
    $24.46
    Qty in Cart: 0
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    MSRP: $34.24
    $24.46
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  • CMMG PARTS KIT AR15 HD PIVOT TD PINS

    CMMG PARTS KIT AR15 HD PIVOT TD PINS

    CMMG

    MSRP: $28.32
    $20.23
    These new pins feature a divot and slightly longer length to aid in removal.MANUFACTURER: CMMGMPN: 55AFF3BMODEL: ARDescription: HD Pivot and Takedown PinsType: Takedown PinsColor: Black
    MSRP: $28.32
    $20.23
    Qty in Cart: 0
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    MSRP: $28.32
    $20.23
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