Gun Parts

Gun Parts

Welcome to the Gun Parts superstore at Boss Firearms Company, LLC. Whether you are undertaking a custom precision build, performing routine armorer maintenance, or upgrading an existing platform, we stock the high-performance components you need. As an authorized dealer for premium OEM and aftermarket manufacturers, we provide everything from stripped receivers and match-grade triggers to enhanced bolt carrier groups (BCGs) and duty-ready barrels for rifles, handguns, and shotguns.

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  • Out of stock
    On Sale
    Aimpoint - 34mm scope adaptor with Picatinny Rail for Micro sights (ECOS-O) - 200153 - 7350004384440 - Boss Firearms - BossFirearms.com
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    Aimpoint - 34mm scope adaptor with Picatinny Rail for Micro sights (ECOS-O) - #200153

    Aimpoint

    Now: $104.00
    Was: $115.00
    Enhance your optics setup with the Aimpoint 34mm Micro Series™ Picatinny Adapter Ring. This versatile ring allows you to mount secondary sights or flashlights on magnifying scopes with a 34 mm tube...
    Now: $104.00
    Was: $115.00
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    Now: $104.00
    Was: $115.00
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  • Out of stock
    On Sale
    Aimpoint - Screw in killFlash® ARD for 30mm sights - 12239 - 7350004382798 - Boss Firearms - BossFirearms.com
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    Aimpoint - Screw in killFlash® ARD for 30mm sights - #12239

    Aimpoint

    MSRP: $60.00
    Now: $56.00
    Was: $62.00
    The Aimpoint KillFlash ARD (Anti Reflection Device) is an essential accessory designed to eliminate potentially compromising reflections from the objective lens. Compatible with Aimpoint Comp series™...
    MSRP: $60.00
    Now: $56.00
    Was: $62.00
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    MSRP: $60.00
    Now: $56.00
    Was: $62.00
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  • Out of stock
    On Sale
    Aimpoint - 30mm scope adaptor with Picatinny Rail for Micro sights (SQFS) - 200152 - 7350004384433 - Boss Firearms - BossFirearms.com
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    Aimpoint - 30mm scope adaptor with Picatinny Rail for Micro sights (SQFS) - #200152

    Aimpoint

    MSRP: $112.00
    Now: $104.00
    Was: $115.00
    The Aimpoint 30mm Scope Adaptor is designed to enhance your setup by allowing the mounting of secondary sights or flashlights on magnifying scopes with 30mm tubes. It's compatible with all Aimpoint...
    MSRP: $112.00
    Now: $104.00
    Was: $115.00
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    MSRP: $112.00
    Now: $104.00
    Was: $115.00
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  • Out of stock
    On Sale
    Aimpoint - Eye piece Hunter H34 - 12703 SPARE - 7350004383436 - Boss Firearms - BossFirearms.com
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    Aimpoint - Eye piece Hunter H34 - #12703 SPARE

    Aimpoint

    MSRP: $9.00
    Now: $8.00
    Was: $9.00
    Eye piece for Hunter H34S and H34L.
    MSRP: $9.00
    Now: $8.00
    Was: $9.00
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    MSRP: $9.00
    Now: $8.00
    Was: $9.00
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  • Out of stock
    On Sale
    Aimpoint - Micro H-2 Red Dot Reflex Sight 2 MOA LRP Mount and Spacer - 200211 - 7350004384815 - Boss Firearms - BossFirearms.com Aimpoint - Micro H-2 Red Dot Reflex Sight 2 MOA LRP Mount and Spacer - 200211 - 7350004384815 - Boss Firearms - BossFirearms.com
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    Aimpoint - Micro H-2 Red Dot Reflex Sight 2 MOA LRP Mount and Spacer - #200211

    Aimpoint

    MSRP: $1,024.00
    Now: $950.00
    Was: $1,055.00
    The Aimpoint Micro H-2 Red Dot Optic is the choice of millions of hunters and sport shooters worldwide, offering speed and accuracy in a compact reflex optic. Designed to fit virtually any platform,...
    MSRP: $1,024.00
    Now: $950.00
    Was: $1,055.00
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    MSRP: $1,024.00
    Now: $950.00
    Was: $1,055.00
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  • Out of stock
    On Sale
    Aimpoint - Micro Spacer High (39mm) AR15/M4 Carbine - 12358 - 7350004382125 - Boss Firearms - Boss Firearms.com
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    Aimpoint - Micro Spacer High (39mm) AR15/M4 Carbine - #12358

    Aimpoint

    MSRP: $95.00
    Now: $88.00
    Was: $98.00
    Enhance your sight picture with the Aimpoint Micro Spacer High. This spacer is purpose-built for Aimpoint Micro series and CompM5 sights, raising the optical axis to a 39 mm height for seamless...
    MSRP: $95.00
    Now: $88.00
    Was: $98.00
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    MSRP: $95.00
    Now: $88.00
    Was: $98.00
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    On Sale
    Aimpoint - Adjustment Cap w/ Slot (T-2/H2) - 200204 - 7350004384655 - Boss Firearms - BossFirearms.com
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    Aimpoint - Adjustment Cap w/ Slot (T-2/H2) - #200204

    Aimpoint

    MSRP: $15.00
    Now: $14.00
    Was: $15.00
    Cap adjustment screw with O-ring.For the 2nd generation of Aimpoint® Micro sight modelsCap adjustment screw with O-ring. For the 2nd generation of Aimpoint® Micro sight models.
    MSRP: $15.00
    Now: $14.00
    Was: $15.00
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    MSRP: $15.00
    Now: $14.00
    Was: $15.00
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    Out of stock
  • Out of stock
    On Sale
    Aimpoint Outer rubber cover - Black (CompM3/ML3 only) - 12225 - 7350004382873 - Boss Firearms - BossFirearms.com
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    Aimpoint - Outer rubber cover (CompM3/ML3 only) - #12225

    Aimpoint

    MSRP: $41.00
    Now: $38.00
    Was: $42.00
    This black outer rubber cover will protect your Aimpoint Comp M2 and M3 scopes.
    MSRP: $41.00
    Now: $38.00
    Was: $42.00
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    Qty in Cart: 0
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    MSRP: $41.00
    Now: $38.00
    Was: $42.00
    Subtotal:
    Out of stock
  • Out of stock
    On Sale
    Aimpoint - 3X-C Maginifier 39mm FlipMount and TwistMount base - 200342 - 7350004385232 - Boss Firearms - BossFirearms.com Aimpoint - 3X-C Maginifier 39mm FlipMount and TwistMount base - 200342 - 7350004385232 - Boss Firearms - BossFirearms.com
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    Aimpoint - 3X-C Maginifier 39mm FlipMount and TwistMount base - #200342

    Aimpoint

    MSRP: $882.00
    Now: $817.00
    Was: $908.00
    The Aimpoint 3X-C Magnifier is a top-tier optic designed to expand your capabilities for observation and target acquisition at extended distances. Whether you pair it with an Aimpoint red dot sight...
    MSRP: $882.00
    Now: $817.00
    Was: $908.00
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    Qty in Cart: 0
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    MSRP: $882.00
    Now: $817.00
    Was: $908.00
    Subtotal:
    Out of stock
  • Out of stock
    On Sale
    Aimpoint - Hunter H30S Red Dot Reflex Sight 2 MOA - 12690 - 7350004383085 - Boss Firearms - Boss Firearms.com Aimpoint - Hunter H30S Red Dot Reflex Sight 2 MOA - 12690 - 7350004383085 - Boss Firearms - Boss Firearms.com
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    Aimpoint - Hunter H30S Red Dot Reflex Sight 2 MOA - #12690

    Aimpoint

    MSRP: $1,093.00
    Now: $999.00
    Was: $1,126.00
    The Aimpoint Hunter H30S is a cutting-edge red dot reflex sight meticulously crafted to elevate speed and precision in the field. This remarkable sight is primarily tailored for bolt-action rifles...
    MSRP: $1,093.00
    Now: $999.00
    Was: $1,126.00
    Out of stock Quick view
    Qty in Cart: 0
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    MSRP: $1,093.00
    Now: $999.00
    Was: $1,126.00
    Subtotal:
    Out of stock
  • Out of stock
    On Sale
    Daniel Defense - DDM4 300 S Complete Upper 300 Blackout 10.3" Barrel - 23-088-19020-047 - 815604015134 - Boss Firearms - BossFirearms.com
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    Daniel Defense - DDM4 300 S Complete Upper 300 Blackout 10.3" Barrel - #23-088-19020-047

    Daniel Defense

    Now: $1,307.00
    Was: $1,405.00
    Elevate your firearm with the Daniel Defense DDM4 300 S Complete Upper in 300 Blackout. This upper assembly features a 10.3" Cold Hammer Forged barrel with a 1:8 twist, all finished in a sleek black...
    Now: $1,307.00
    Was: $1,405.00
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    Now: $1,307.00
    Was: $1,405.00
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  • Out of stock
    Aero Precision - M5 Stripped AR10 Upper Receiver - APAR308503C - 815421020731 - Boss Firearms - BossFirearms.com Aero Precision - M5 Stripped AR10 Upper Receiver - APAR308503C - 815421020731 - Boss Firearms - BossFirearms.com
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    Aero Precision - M5 Stripped AR10 Upper Receiver - #APAR308503C

    Aero Precision

    $180.00
    The M5 .308 Assembled Upper Receiver comes with both the port door and forward assist hardware preinstalled. Forged from 7075-T6 aluminum, this assembled upper is precision machined to accept...
    $180.00
    Out of stock Quick view
    Qty in Cart: 0
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    $180.00
    Subtotal:
    Out of stock
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